cd key doesnt work

i just got SC as a gift and cd key doesnt work any ideas|||Is it a brand new copy of the game or is it someone who is done with it and gave it to you?|||How did u get the game boxed or digial download and how are u entering the key into gpgnet|||I have the same problem, I bought Gold Edition from Amazon and just got it but My FA cd key doesent work it say's it is Invalid.|||GaMeDoG|||i have the same problem. if some one found a solution plz can u tell me ? thks|||make sure you type it as u see it if that fails pm gpg servo for more help below ucp.php?i=pm&mode=compose&u=18790