Dual monitor problem

[Bluer]

I want to use a big screen tv as a second monitor. I bought a video card (Zotac GeForce 9400GT DP) from Microcenter. I told the salesman what I wanted to do and he recomended this card. Now other people tell me I can't use this for the application. Can anyone tell me how to get this to work with what I have. The tv is a new Vizio flat screen and the computer is a new Gateway. Thanks!

 

[crazy359]

could u tell us what size the screens are? and 9400gt isnt that good.....depending wat u will do on the screens

 

[jay2tall]

Does your PC currently use onboard graphics, or does it have a seperate graphics card already? What model Gateway is it?