just l4d installed no. you need sdk base and hl2dm. hl2dm you can get with the nvidia or ati steam offer (google the thats your video card) and sdk base you can download from the tools tab. do try a bit of searching the forum next time
We're not tools of the goverment or anyone else! Fighting was the only thing.. the only thing I was good at. But, at least I always fought for what I believed in!