I recently picked up an ATI X1600XT and had it connected to my Toshiba 46HX83 via the component video output. Since TheaterTek won't let me play DVDs when using TV-out, I tried using a DVI connection tonight. When connecting via DVI, it was impossible to possibly calibrate black level as I couldn't see the black bars in the pluge pattern on DVE, or the moving bars in the AVIA pattern. I'm guessing the video card is crushing black levels though DVI. I know it's not the TV, as I don't have this problem with stand-alone DVD players that using DVI. I've tried various settings on the video card and nothing helped. I even created multiple monitor drivers using PowerStrip, but nothing helped. Any suggestion? If I can't get this working properly, I'm just going to disconnect my computer from my HT. It's too much of a pain needing to rip DVDs to the HD before I can play them.