How to create a game in Left 4 Dead [Fixed]

What,s up guys Last time i make this kind of video i dont quite now what i was doing but now i got it fixed so i can show you in a real kind of game So... and here is the link to my second video of this kind : http://www.youtube.com/watch?v=PIxymq7bbJQ hope you will enjoy And in the last of the vidio i show you the last lyrics of the song --becues the song dont are finish yet--