Disk cleanup

Unnecessary files build up on your computer over time. Disk Cleanup is a tool built into Windows that can safely remove these unnecessary files and free up valuable space on your hard drive.

Using Disk cleanup
Disk Cleanup can be accessed by "right clicking" a hard drive icon in "My Computer" (Windows XP) or "Computer" (Windows Vista) and choosing Properties->Disk Cleanup.

Videos
1. Running and automating Disk Cleanup in Windows XP.
2. Running and automating Disk Cleanup in Windows Vista.