well this instability issue has led me to the conclusion that i've got to re-install my OS. problem is, i've been unable to locate the WinXP Pro disc which a kind monkey sent my way (figures i can find all the other install discs from up to 6 years ago), so the only thing i've got is my winXP/SP1 install disc from my laptop. i tried to run that but i got a message saying the OS on my machine was more current, and it wouldn't allow an install to occur. what should i do? format C: and then boot up w/ the XP Home cd in the cd-rom tray?