Dual Monitors in XPS-210

I'm trying to help out one of my friends and install dual monitors on his Dell XPS-210.  I bought a new video card (Zotac graphics card GT218-ION 512MB 64BIT DDR3).  I installed the new card in his PC and when I started it up, I couldn't get any video to display on either monitor.  After not getting any video I read the instructions for the video card and it says to disable the onboard video.  Does anyone know if the new video card I bought is compatible?  I read that if you install a new video card, the onboard video is automically disabled but I'm not seeing any video at all when I boot.  Do I need to...

1) Remove the new video card

2) Boot the PC

3) Uninstall the onboard video in device manager (OR, is there something in BIOS I need to change?)

4) Install the new video card

5) Cross my fingers and hope I get video???  At that point I'm hoping that I can use the VGA for one monitor on the card and get a converter from DVI to VGA for the 2nd monitor. 

Any help is greatly appreciated.  Thank you in advance!!!