Ok, all of a sudden (as in the last 8 hours), I can't use most of the programs on my comp. I can use IE, obviously, and a few more windows programs, but everyting else is pretty much not working. Whenever I try to run a program, a DOS looking box pops up, then disappears after a couple seconds. I hadn't changed anything up to when it started screwing up. Since then I reinstalled XP pro, but nothing has changed. I can't run my antivirus program, or anything like that either. any ideas? I'd really appreciate any input.