Yes this is a repost – 1 Link only

Download

http://www.megaupload.com/?d=NMZHGNG6

Password

boxxers

Steps

Extract

Run

Online Play

http://www.megaupload.com/?d=YU0SYRJO

Install that

In Executable Settings, browse to
your left4dead.exe, ex:
C:\Program Files\Left 4 Dead\left4dead.exe