ok as an update the nvcap I added above to enable hdmi did give me hdmi out, but most of the games I tried to play were black screen. Chuzzle being the easiest one to test (you can try it freeware.) amyone know why? Another weird thing I noticed is the mouse cursor is blue with that string.
I also added a string that I got from my GTX470 that boots fine to hdmi (other than blue screen at boot that can be fixed by switching hdmi input on/off) and it didn't work at all... Can someone please tell me a good valid string for a GT240 that boots hdmi and won't make most of my games have a black screen?? Again, the string I populate for nvcap from nvflash only works with DVI properly. the reason this is a big deal to me, is I would like to have audio and video via hdmi in my setup.