I currently have a Gateway 4200+ Media Center GM5084 pc. I am interested in installing an upgraded video card. The computer currently has an Intergrated NVIDIA Geforce 6100 graphics card. I am unsure if I can replace it. I have 1 PCIe x 16, 1PCIe, and 2 conventional PCI slot add in card slots. Any information would be extremely helpful and appreciated. If it helps I have a xFx 7600 GT 256mb GDDR3 PCIe x 16 to put in it. I have never change a video card. I am trying to improve my wifes computer so I can enjoy WoW with a higher video quality. Thank you