Onboard Integrated graphics (IGP) driver need to uninstall before installing new video card (PCI-E) driver?

Previously I am using Intel Integrated Graphics on my motherboard (Intel 946GZ - GMA 3000 driver). I just bought a Nvidia PCI Express x16 video card to upgrade my system (Nvidia Geforce 8500GT) and I would like to know if my current GMA 3000 Intel driver will conflict with my new Nvidia driver. Do I need to uninstall the Intel driver before installing the new Nvidia driver?|||Well its not necessary to uninstall but for some motherboards the graphics card will be not be detected so everyone advice to uninstall the onboard graphics.|||No, you do not need to uninstall the old driver.