j´ai recu ca comme message
This is an automated message generated by Steam account administration.
Steam has detected that your copy of Half-Life 2 Retail Standard has already
been registered to another Steam user. Your product´s CD- Key (the number printed
on the CD case which you were asked to type in after installing the game)
matches one already in our database.
The CD- Key you entered is: xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
You will not be able to play Half-Life 2 Retail Standard unless you provide an
unclaimed CD- Key. To provide an unclaimed CD- Key, you will need a copy of
Half-Life 2 Retail Standard which has not already been registered on Steam.
Double-click on the name of the game in Steam´s "Games" window and then follow
the given instructions.
Et la je fais quoi ?? ?