Doom 3 ROE invalid keys

[PuNk]

Alright, i bought Doom 3 a while back played it, beat it etc. I downloaded Doom 3 ROE from Bitlord, well i found ever frickin CD key for REO but none of them work, it says they are invalid my keygen doesnt even have a working one. What should i do? is there a remedy for this key? a patch update maybe? please help!