I'm thinking of selling a couple of PC's and I would like to delete all of my personal info. I know that when you delete files, there are still traces of these files on my PC. My question is what do I need to permanently delete these files. I looked on download.com and... well, I don't know what's good. http://www.download.com/3120-20_4-0.html?tg=dl-20&qt=delete files&tag=srch Any help will be greatly appreciated.