Dual Display Video question

[swedishlf]

Hey guys, I've hooked up a second display on my stepdad's PC (one in his office, and the other out in his garage, hang out place). He uses a wireless mouse and keyboard so it's pretty sweet, he can compute off the same system in either room.

Anyway, the question I had is as follows: Is there any way to get video to play on BOTH monitors simultaneously? I seem to remember getting that setup working a while ago, but I can only get one at a time working here. They both show the desktop (ultramon is awesome btw), but the primary will show video while the secondary shows only a black screen.

Any tips on getting them to simultaneously display video would be much appreciated.

Edit:
Using a radeon 8500 and the latest catalyst drivers, what I'd like to do is go into the catalyst control panel and go to video->overlay->"same on all" but it's greyed out and I can't click it.

I've got the main monitor on the DVI port and the secondary on the VGA port.

 

[Factorxfiles]

Before you do this, just one warning. Once you've started using multiple displays, you'll feel a pain in your side if you try to do without it.

Go to display properties, settings tab, and select the second monitor. There should be a check box to "extend my windows desktop onto this monitor" or something. Apply, and boom, multi-monitor bliss.