A propos des invalid cd-key allez voir ici :
http://finger.stomped.com/plans/za [...] e.com.php3
Le passage important :
If you get an "invalid_cdkey" message back from a server, that REALLY means that the authorize server has recieved your cdkey, decoded it, and found it to be BAD. Re-entering your cdkey should fix this problem. It does not ever give this message with good cdkeys.