Right-click the hard drive’s icon (which says “C:”), then click “Properties”. You see a pie chart.
Click the “Disk Cleanup” button.
The computer shows a list of file types. For example, Windows XP shows this list:
o Downloaded Program Files
o Temporary Internet Files
o Offline Web Pages
o Recycle Bin
o Setup Log Files
o Temporary files
o WebClient/Publisher Temporary Files
o Compress old files
o Catalog files for the Content Indexer