Yes, I had it running on a Diminsion 8200 XP Pro with Nvidia 6800 GTO for over 3 years now. Just switched over to the XPS700 Vista x64 and have tried all the drivers available. Currently running the latest version. I have reason to believe that one of the cards is bad, dell is sending a new one. I have tried both cards, no luck.
I do have it attached to a Gefen Cat5-1500 HDR extender, but Gefen states that "it just an amp and will not affect resolution"
Thanks again for bringing up what I was too lazy to do. I know better than to just take someones word or what "should" work. I have been in the business way too long for such a lazy mistake!! However, I do get lazy!
Anyway, at least I know it will work when the new XPS 730x H2C is delivered I will be moving the XPS 700 in my office for the direct connect (- Gefen).