Forum talk:Where do I find my PC Screenshots?

Hey guys I'm new to this website and I LOVE cod4! Anyway I need some help with it and that is I can't install my Call of Duty4 on my pc. It keep saying that I need Call of duty 4 to install Call of Duty 4 1.6 patch.. What do I need to install first and what does patch do?? Please help me guys!!