I used the crap cleaner (ccleaner) off that MajorGeeks site. It cleared over 500mb of ...well,crap,off my system. It also has a registry fixer thingy which I was reluctant to run. I saved the current registry just in case (it was easy to do with the proggie). It did that with no probs and this beast is spittin' thunder and crappin' lightning like the day I bought it. I can reccomend it,but won't accept resposibilty for it if you crash...heh.