Disable System Restore

You can gain a lot of drive space by disabling System Restore. (You should already have a backup regimen in place before you do this.) In Vista, right-click My Computer, select Advanced system settings, click the System Protection tab, and uncheck any drives. In XP, right-click My Computer, then under System Tasks, click on "View system information." Click on the System Restore tab and click the box next to "Turn off System Restore on all drives" to disable it.

Wireless Home Networking

Fix Connectivity Issues

It sounds crazy, but 95 percent of all Internet connectivity problems can be solved by power-cycling both the router and the modem. Turn them both off, and then turn the modem back on first. Once its "sync" or signal light comes on, turn on your router.

Use Encryption

You've probably heard this before, but it bears repeating: Always enable your router's wireless security! Wired Equivalent Privacy (WEP) encryption is the oldest (and weakest) form of security; the newer (and stronger) Wi-Fi Protected Access (WPA) and WPA-2 are the best protection available today for home users.

Update Your Router's Firmware

All routers include internal read-only chips with embedded instructions that can be updated by the manufacturer. Router manufacturers generally update a product's firmware to increase performance as well as to resolve bugs and security issues, so it's wise to keep your router's firmware up-to-date. Check the manufacturer's Web site for the latest updates.

Boost Your Wireless Signal

If walls and distance are causing wireless signal degradation, you can do a few things to boost it. Move your router to higher ground—the signal radiates downward. You can also try a signal extender (or repeater), which boosts the signal. Finally, high-gain antennas will work, but they only focus the signal in one direction.

Change Admin Password

Every router has a well-known default password that's used to access the router's browser-based configuration page. Most setup wizards will make you change this password, but not all do. If not, be sure to change it yourself to prevent unwanted hangers-on from changing your network's settings.

Go Back to Factory Settings

If you've lost or forgotten your router's login credentials, you can get around this predicament by resetting the router to its factory settings. Do this by holding down the button on the back of it for 30 seconds. Next, look in the manual for the default user name and password, and then change them on your router's browser-based configuration page.

Disable SSID Broadcast

Unless you disable it, your router broadcasts its service set identifier (SSID)—the name of your network—which allows your neighbors to see (and attempt to gain access to) your network. Instead, disable broadcasting, making the network appear as "SSID not broadcast." Access the unnamed network by typing in the SSID name when prompted.

Change the Default SSID

Change your pre-defined, default SSID—leaving it as "Linksys," for example, tells the world that you haven't configured your router, which invites attackers.

Filter by MAC Address

Every piece of networking gear includes a unique "fingerprint" called a media access control, or MAC, address. You can configure your router to filter connections using these addresses so that only your computers can connect to your network. Most routers will show you connected devices, so adding an adapter's MAC address is a one-click process.

Step Up to 5GHz

The majority of today's networks operate in the crowded 2.4GHz frequency range, which is shared by microwaves, cordless phones, and other home networks. To avoid possible interference, many new routers are capable of broadcasting at 5GHz, which has 23 wide-open channels as opposed to 2.4GHz's three non-overlapping channels.

Limit Your Number of DHCP Clients

Most people use their router as a DHCP server; when clients connect, the router dynamically assigns IP addresses from a large pool of addresses. Limiting that list to the number of clients in your home, however, will help prevent interlopers from hopping onto your network.

Use Your Router's Firewall

Two features make most hardware firewalls more powerful than software firewalls: stateful packet inspection (SPI) and network address translation (NAT). SPI examines packets' content and behavior before granting access, and NAT hides all PCs connected to the router from the Internet, "translating" their IP addresses into private ones that are unreachable from outside the firewall.

Change Your Channel

Wireless B and G (and some N) routers operate at the 2.4GHz frequency, which only has three non-overlapping channels: 1, 6 and 11. By default, your router will most likely be using one of these channels, and the bad news is so your neighbors' routers as well. If you experience dropped connections, sluggish performance or both, a good first step is to switch the channel. If it's set to channel 1, go to 11. If it's set to 6, try either 1 or 11 for best results.

Let Windows Control Your Wireless Networks

If a network adapter's software takes control of your wireless network, it can be difficult to put Windows back in charge. First, click Start, then Run, then type services.msc. Scroll down to Wireless Zero Configuration and start the service. Right-click your wireless connection, select view available networks, and then click advanced settings on the left. Click the wireless networks tab, and check "Use Windows to Configure my wireless network settings."

Disable File Sharing in Public

If you're in a public place with a Net connection, it's a good idea to disable File and Printer Sharing for Microsoft Networks. In the properties of your network adapter, uncheck the appropriate box. It's also a good idea to switch your notebook's wireless radio off if you aren't using it.

Data Security

Disable Remote Registry Editing

Only you should be editing your Windows registry, so make sure this service is disabled by clicking Start, Run, and then typing "services.msc." Scroll down to Remote Registry and make sure the service is stopped, and then set it to either manual or disable.

Lock It Down

It's always a good idea to lock your PC if strangers are nearby and you step away for a few minutes. Just press Windows key+L to lock your PC. Alternatively, you can set your screensaver (via the Screensaver tab in Display Settings under Control Panel) to require a password if it's deactivated by checking the box in "Settings" that says "On resume, password protect."

Prevent Phishing Attacks

Protect yourself from identity theft and phishing attacks by using the the latest versions of Firefox, Internet Explorer, and Opera. These browsers include protection that double-checks URLs against a blacklist, and will notify you if you're about to visit a known phishing site.

Keep Your Software Up to Date

Hackers and crackers love to take advantage of exploits found in software, which causes the developers to release a patch to plug up the holes. Therefore, it's imperative you not only enable Windows Update but also download the latest version of any software on your system, especially your Web browser and antivirus program.

Be Wary of P2P Files

Virus makers love peer-to-peer file-sharing services. They name their virus "Angelina Jolie Wallpapers" or something similar and upload it. Then millions of people download it, launch it, and wonder why their computers are infested with viruses. Download with caution, and always use antivirus software. If you need an effective, free antivirus solution, we recommend AVG Free.

Wipe the Drive Before Donating Your Old Computer

If you are getting rid of a hard drive and want to render all or some of its data unrecoverable, you have two options. You can download Eraserto securely wipe any file or folder, and you can use Darik's Boot andNuke SE (DBAN) to write over the entire drive. To use DBAN, download it and burn it as an ISO disc, then boot from it. It will provide you with instructions on the welcome screen.

Encrypt Sensitive Files

If you want to encrypt sensitive data, you can buy a portable USB drive with built-in encryption like the CMS ABS-Secure Encrypted Backup System, but if you just want to protect a specific folder or group of files, we recommend Truecrypt, which is free. It encrypts a custom-sized volume with 256-bit AES encryption, so it's extremely secure.

Verify Your Backups

Many people have a "set it and forget it" mindset when it comes to backups. Even after you establish a regimen, however, it's critical that you check the target folders periodically to ensure the proper files are being backed up. If not, re-configure your backup routine to make sure it's working properly.

Back Up Your Data

You must back up your data, period. If you have the means, we highly recommend an external USB drive like the Maxtor OneTouch 4 Plus. If you already have an extra drive in your system—but just need some good backup software—try the free version of 2BrightSpark's Syncback, which is sublimely easy to configure.

Turn Off Your PC During Lightning Storms

Even surge protectors can be overwhelmed during electrical storms, and we've seen the results first-hand—fried motherboards, processors, hard drives and power supplies. If you're experiencing a heavy-duty electrical storm, take our advice and unplug your computer from the wall socket—just in case. And buy a laptop to use until the crisis passes.

Enable S.M.A.R.T for Your Hard Drives

S.M.A.R.T (self-monitoring analysis and reporting technology) allows your drive to report whether it's about to fail, which can give you a heads-up to replace it. All the modern hard drives have it—go into your PC's BIOS (press Del or F2/F10 during bootup) and enable it.

Enable Extension Viewing

By default, Windows hides file extensions, and virus-makers exploit this feature by giving their executable program names like Popularsong.exe, which appears as a harmless audio file if you have extensions hidden. To enable extension viewing, open any folder and click Tools, Folder Options, and uncheck "Hide extensions for known file types."

The Best Computer Tips and Tricks: Microsoft Office 2007

View Documents as Drafts

One thing that annoys us about Word 2007 is that it doesn't automatically let you open a document in Draft view (which was the Normal view in earlier versions of Word). To enable this, click the Office button > Word Options > Advanced > General. Then click the box next to "Allow opening a document in Draft View."

Display Formatting Marks

Some people can live without Word's marks for spaces and paragraphs, but for those Word 2007 users who can't, go to the Office button > Word Options > Display. Then, under "Always show these formatting marks on the screen," check the box for spaces, paragraph marks, and more.

Show Page Breaks in Excel

Printing an Excel spreadsheet can be a hassle, but you don't need to go to Print Preview in order to see where a page breaks. Click the Office button, then under Excel Options, click Advanced. Under "Display options for this worksheet" click the box next to "Show page breaks."

Check Your Style

First, Word could check your spelling, and then your grammar; now it can even critique your writing style. If you're concerned about things like wordiness and improper use of the passive voice, have Word 2007 check for them. Click the Office button > Word Options > Proofing. Under Writing Style, select Grammar & Style from the dropdown. If there are particular areas you don't Word to scrutinize, click the adjacent Settings button and then uncheck the appropriate boxes.

Change Your Presentation's Resolution

With larger wide-screen displays becoming the PC-viewing norm, you might not want your PowerPoint presentation to go online formatted for an old-school 800x600 resolution. To bump up your presentation's optimal screen size, click the Office button > PowerPoint Options > Advanced. Under the General area, click Web Options, select the Pictures tab, and choose the screen size you want.

Revert to Old Office File Formats

The latest version of Office "grants" users new default file extensions that aren't compatible with previous versions; you're forced to download and install a plug-in. But if you want to make the old Office file formats your default ones, click Office, and then Options for the specific program you're in. Select Save in the left-hand column, and then under "Save documents," choose the old Office file extension from the pull-down menu next to "Save files in this format."

No-wait Screen Savers

Don't want to wait for your screen saver to kick in? Create a shortcut to it just as you would for any other program by hitting Windows key + F to search your computer and click on "All files and folders." Type "*.scr" in the "All or part of the file name" field to find every screen saver file on your computer. In the resulting list, right-click and drag the screen saver you want to your desktop. Whenever you want it to start, just double-click its icon.

Type With an Onscreen Keyboard

Whether you have trouble with your hands or you just prefer using the mouse, typing with Windows' onscreen keyboard can be a great convenience. Navigate to Start > All Programs > Accessories > Accessibility, and click "On-Screen Keyboard." Click OK to clear the dialogue box and then start "typing"—you can even change the settings to "press" keys just by hovering your mouse over the letter you want (enable this feature by selecting "Typing Mode" from the Settings menu).

Change What Programs Start When Windows Does

You can prevent a lot of apps forcing Windows into chilled-molasses boot times—without uninstalling anything. Click Start, then "Run...," and type msconfig. This brings up the System Configuration Utility window. Click on the Startup tab to see a list of all the apps slated to start when you boot up Windows. Click the check mark next to any you don't want, and then click OK to save your choices.