I jus bought the geforce 5900 xt graphics card and also bought the tv wonder ve tv card and i use the dual display. I unable to drag the tv window to the secondary monitor. IT wond move over to the other monitor when i drag it like everything else does. I know they are two different manufacturers but are supposed to be compatible. Im sure its probably a hardware issue, anyeone know how to fix this?

I've encountered the same situation using dual display with an ATI All-In-Wonder 9600. The TV window does not want to be dragged from one display to another. I'm also interested in a fix and will post if I come across one myself.

It's probably because overlay is disabled in secondary output. If possible, try the TV with overlay off. It will use the CPU for drawing the picture then but it shouldn't be a problem for today's CPUs.