I'm having trouble with this as well. It should be working but I can't seem to get it to display 800x480. I have a Zotac 630i and a Xenarc 700tsv. The 630i has a GeForce 7100 GPU and I'm using the ForceWare 195.62 drivers. I can set a custom resolution of 800x480 using the settings from Xenarc's site and it says it's successful and looks ok during the test, but after I exit out of the nVidia Control Panel, my custom resolution is not available for me to choose. Any ideas?