Yay my first post! I've been bashing my head here, completely baffled about this problem. What I'm trying to do is hook up my PC to my projector using the DVI connection on my ATI X800 Pro to the HDMI input on my AE700 projector. Yes, I have the right cables...a DVI, DVI-HDMI coupler, then an HDMI caple. I'm trying to get the resolutions that I was allowed when I used the RGB connection, of 1280x1024, but it keeps borking out. Note that I can get that resolution from within windows, but as soon as I start Doom3/HL2, I have immediate problems. It looks like there's a hang-up with detecting the native resolution of the monitor device (my projector), and it thinks the max is 856x480. Here's an interesting experiment I ran with one game: 1) ran in regularly, with the game set to run at 1024x768...the game exited with a DirectX error. 2) ran it again in windowed mode (runs in a window) at the same resolution, and it worked. 3) ran it regularly with an RGB cable, worked fine. I can understand why RGB should work easily as it's all analogue, but I would hope that a digital connection has the same flexibility w/ better picture quality. So far, I can't confirm either Note that the projector is being detected by the PnP manager on the PC correctly, and actually states the max resolution is 1920xsomething-er-other. I also installed PowerStrip, but I have no idea how to use it :/ Any advice would be greatly appreciated. I've tried to , but nothing seemed to make sense. Thanks!