Clear up the clutter with Disk Cleanup:
Click Start, point to Programs, point to Accessories, point to System Tools, and then click Disk Cleanup. Click the drive you want to scan, and wait while the program calculates how much disk space is available for cleanup. To delete obsolete files, click the Disk Cleanup tab, select the check boxes of the files that you want to remove, click OK, and then click Yes.
Defragment your hard disk to keep it in peak condition:
Files and applications on your computer's hard disk drive are not always stored together as one unit, but are often divided into smaller units and scattered around the hard disk. This is caused by normal use. On a fragmented hard disk, a computer has to work harder to gather all of the small units to perform the commands you give it; this slows down its ability to access files and run applications. Running Disk Defragmenter helps by putting all like files and applications into contiguous groups so the computer can access them quickly. If you use your computer a lot, it's a good idea to run Disk Defragmenter on a regular basis. It's also a good idea to run Disk Defragmenter after you install a lot of applications to enable them to run at top speed.
Here's how to do it:
Click Start, point to Programs, point to Accessories, point to System Tools, and then click Disk Defragmenter. Click the Settings button, select the options you want (to ensure fastest startup of programs, select the first check box), and then click OK. Choose the drive you want to defragment from the drop-down menu, and then click OK.
Note= It is best to shut down all your applications before you run Disk Defragmenter.
The Temporary Internet Files (or cache) folder contains Web page content that is stored on your hard disk for quick viewing. This cache permits Internet Explorer or MSN Explorer to download only the content that has changed since you last viewed a Web page, instead of downloading all the content for a page every time it is displayed. To delete the files in the Temporary Internet Files folder, follow these steps:.
Quit Internet Explorer and quit any instances of Windows Explorer. Click Start, click Control Panel, and then double-click Internet Options. On the General tab, click Delete Files under Temporary Internet Files. In the Delete Files dialog box, click to select the Delete all offline content check box , and then click OK. Click OK.