an alle die angeblich einen original cdkey haben der nicht mehr geht oder so:
Do you still have your original retail package with the printed * bitte keine illegalen Tipps *?
If you still have your original printed * bitte keine illegalen Tipps *, we can reset your key. This will remove it from the account that is currently using it, and add it to your account. To do this, you will need to have a working Steam account (create a new one, if you don't have access to your old account).
Attention: Please note that we do not return the items we receive, so please do not send the CDs. Send the information typed and printed, and specify the use of any numbers in the names or email accounts (for instance, "B0B" has a number zero in it, please point this out to us). If your submission is handwritten, keep in mind that it will take more time to process the information. Also, documents received with incomplete information (eg. no account name, name or email address) will not be accepted and we will dispose of them with no warning.
You will need to mail us (by postal mail, not email):
1. The original printed * bitte keine illegalen Tipps * (not the whole package, just the part with the * bitte keine illegalen Tipps * printed on it). Please note that we need the original * bitte keine illegalen Tipps *-we are unable to accept copies or photos.
2. Your email address
3. The Steam account that you want the * bitte keine illegalen Tipps * assigned to.
Send your package to:
* bitte keine illegalen Tipps * reset
Valve Software
PO Box 1688
Bellevue WA 98009
USA
Quelle: http://www.steampowered.com/index.php?area=cd_account_faq