Ok it's not totally messed up, just when I play back an mpg or avi it's all fuzzy and I'm in the middle of editing a DV project. The things I deleted were keys with "Radeon" in em since I installed a GF4 (not all Radeon keys). I deleted one key which contained GF2 GTS auto update or something or rather, but that was a previous card I had also. But after all that now when I play DV files the edges are fuzzy and mpeg-1 files are even worse. I re-installed the latest Detonator drivers but nothing changed. Any ideas? The last resort is to re-install WinXP Pro but that's way too much work for a little registry setting. Any ideas will be greatly appreciated!