Just Installed Windows 2000 (created with all GreenMachines failsafe patches) and installed PowerDVD ver 5.0.0.603 No problems. DX9 does not show under add/remove programs. I remember installing an old game once, that didn't recognise my current DX, which proceeded to install an earlier version. Game worked OK, not much else did. Though I doubt, BaTLeZone, judging from your posts that this would be your problem. Thanks GreenMachine.... Great product. Next step.. make an XP disc and start over. If it ain't broke, see if you can brake it, cuz fixin it's fun.