Update :
Apparently there is another way to go from DVI ( PC ) to HDMI, that is to buy a HDMI-DVI adapter and then insert an HDMI-HDMI into it, which seems to work. That way you could get audio too i guess.
Also, if you take a look at
http://www.msentertainment.nl/ED/xbo...AV%20Cable.jpg
You can see that the cable has a sort of box that has HDMI and 2 audio cables, but from what i know, HDMI already sends audio so why is that audio-input there? Is it neccesary to use or not? If not, would a simple HDMI-HDMI from Xbox-Monitor also work? As it is about $50 cheaper.
Also decided to buy a 7600 GS AGP, since it has some great video/HD and HDCP functions that would be great. Only $70 or less.