How to mount CS:S Content?

Hello! I am working on a map, but I need content from multiple games mounted. How do I go about getting CS:S, and Episode 2 content to appear in Hammer?

Thanks.

Extract the content from the gcf and put it in the materials/models dir in the game you are making your map in.

This might sound like an abolutely stupid question… but where exactly can I find the .GCF in the CS:S folder?

i believe its in the steamapps folder

Wow. Ok so it was under my nose the whole time. Thanks a ton for your help!

Ok, one question. When I import the materials and models into their respective folders, I can select the model in editor, but it does not appear.

[editline]2nd June 2012[/editline]

Specifically, it gives an “Error loading model.” error.