I will be replacing my graphics card myself for the first time and was wondering what I'm supposed to do when it comes to the drivers. I am replacing my Radeon 4850HD for this PowerColor 7790 hopefully tomorrow. I'm not sure if I'm supposed to uninstall my drivers for my previous graphics card before installing my new graphics card or if I should install drivers for my new graphics card before installing or after. Also, in one of my previous posts someone mentioned downloading AMD Catalyst. I've downloaded it earlier today for the HD 7XXX series but I'm not exactly sure what it even does. I'd appreciate any help or advice.