Arnold,sorry I could not get back to you sooner..... I don't know off-hand of any tut's...that's kind of a hands on learning thing. If your computer came with the OS aready installed,then you should have one or two disk that came with it called recovery disks.If that is the case,they will do the format and re-installe for you all at once.If not you'll need to create a start-up disk on a floppy,and use DOS prompt commands...really need to have somebody around that knows about it at that point. Understand that a format wipes clean EVERTHING on your HD....anything that you don't have a back up of is gone forever.So plan ahead! It's not really hard at all to do(just takes time),but you'll notice a big change in the way your computer runs,plus you can get the upgrades/patches installed. Good Luck,SWAMP