CCleaner

Im looking at the net this evening,looking for a good anti-virus for my PC.....suddenly I found this CCleaner.....also I read some discussions...CCleaner (formerly Crap Cleaner) is a freeware system optimization and privacy tool. It removes unused and temporary files from your system allowing Windows to run faster, more efficiently and giving you more hard disk space. The best part is that it's fast! I am extremely impressed with the improvement in my computer after using it.Be prepared the first to you run clean windows for the application to take up to 2 hours to process depending on the size and usage of your hard drive.I was shocked when it found 173,867 un-needed files in windows and made over 100 deletions from my system registry file, which really speeded up the startup process.

http://www.ccleaner.com/