Want to fix 2 graphics card and HD tuner

[PAOLA]

I would like to equip my computer a second graphics card and an HD tuner (which I did, indeed, decided type: tuner card or usb stick and what brand!) so you can watch TV while playing. Is it technically possible for Windows XP to run 2 graphics cards independently, knowing that I have two monitors connected to my graphics card? How the drivers and especially the Catalyst Control Center will present, would I have both? if the solution is feasible, what TNT HD tuner select, key or card and what brand?

My config: Windows Xp SP3, asus P5QPro, Ati 4870

[EDRIC]

You do not need a second graphics card to do your editing, one is enough. You put the screen on which you want to watch tv mode range (in the CCC).
For it will be against a CPU costau allowing you to play and to play a HD video stream (unless hardware acceleration is integrated with the DVB-T tuner card).

[Fanchon]

I just want to be able to work on dual display and can view the TV screen on a third or even be able to work on quad screen. Is it technically possible?

[Conrad]

Technically ... yes

with the 4870 you can already view on two monitors + tv tuner tone on a third
after you can either use the duplicator matrox 2go to display on three screens and your TV tuner on another card or use 2 = 4 graph screens + tv tuner tone on a screen