Okay I've looked around a lot and have found very little. I've seen looking through threads that CS:S is dependent on 5 GCF's. Is that true? and if so any place I can find all of them? I'm a noob and probably gonna get spammed >.>
I believe you alredy have the mandatory files in your steam even if u didn't install any game yet. As of the other files.. Maybe i'll edit soon with a topic. (But just look in the GCF forum.. there are a few topics)