I don't know if the thread name is the proper terminology for what I want to do. Here is my situation: This weekend I had a meltdown on one of my older Dell's. Error messages, problems booting up, lost my connections to the internet because some files were corrupt. I took it to a local store who told me the best thing to do was back up my data, re-install Windows 2000, and then put my data back on. Sounded good to me. I picked up my machine today, got home and booted up. What the guy actually did was install Windows 2000 on my hard drive AGAIN - so now I have two instances. The first one, which still does not work properly, and the second one, which is the new install. This sucks, one reason being now I have no room on my hard drive because I have two OS's on there, and everything that entails. So, I want to just wipe everything out (I have all my data backed up, so this is not a problem), install Windows 2000 from scratch, re-load all my drivers (I can download them from Dell's site), and be done with it. The question is - how do I do this? Is this reformatting the HD? Can someone point me to a site if it is too complicated to talk about here. Any and all help is appreciated!!!