Here's my problem as nearly as I can figure it out. It involves three programs: Stardock Deskscapes, nVidia's GeForce Go 7600, and any game made by Steam. If I have Deskscapes installed, and run a Steam game, the video freaks out, tries to change to several different resolutions, then crashes Windows Explorer. If I uninstall Deskscapes, the problem goes away. If I have a static background but still have Deskscapes installed, the problem is still there. It sounds at this point like the problem is on Stardock's end.
However, if I run any other full-screen application, such as Doom3 or S.T.A.L.K.E.R. for instance, there is no problem. Updating video drivers, or even using hacked video drivers had no effect on the problem. Also, my system is x64.
I don't really know if anyone else has run into this. In the respective forums for each of the softwares involved, the general suggestion was to blame the other, and/or to stop using the other's software. As an American, I find the idea of not having everything I want when I want it unacceptable

so I thought I'd bring this problem to neutral ground and see if anyone has any ideas.