Left 4 Dead 1's new downloadable content, Crash Course, will be available by September 23, if Microsoft's to be believed.

The new campaign - which bridges the gap between the end of the No Mercy campaign and the beginning of Death Toll - is being pimped for  a Game with Fame event next week

If you're an Xbox LIVE Gold Member and you want a chance to play the new Crash Course add-on for Left 4 Dead, send a friend request to the following Gamertag and be online half an hour before (5:30 P.M. Central Time) the Game with Fame session starts on Wednesday, September 23, at 6:00 P.M. CT.

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