How do you turn off the integrated video card on a Dell desktop?

I am putting a e-GeForce 7800 GS onto my desktop. It states that I must disable my integrated video card. But how do you do that? Please be specific!|||You cant, Dell BIOS doesnt have that feature, when you insert additional card, it will use the new one.|||depending on the dell u have there r 2 ways of doing it 1 way is to see if there are any jumpers on the board for the onboard video or 2 check the bois.or 3 install the new video and then it should auto disable the onboard one|||on a windows PC if you are using a second video card as your main display card you can disable the onboard video in the device manager and set your new card as the default card in display properties. Good luck