just replace old with new as if you say same drivers then all u need is replace
I have a Gigabyte 8650GXM motherboard on which I have mounted a 32MB nVidia TNT2 M64 graphics chip. The MB's interface is AGP 4x. I am about to purchase a Geforce4 MX-440 which is compatible with 8x as well as 4x and 2x. I need to know how I can plug out my old card and put in the new. Also, I found out that both use the same driver.(nVidia's Forceware drivers)I am aware of the procedure of disabling my old gfx chip in Device manager. I am running Windows XP Pro.