Have game and manual but no serial number.

[therockfrog]

Don't know who to PM so I figured I'd write this here.

Bought Dom3 over a year ago, played it, enjoyed it. Lost the manual in a move. I was sent a new manual but of course there was no CD key in it, which was fine. Now, last month I wiped my hard drive and installed Ubuntu on it. I hadn't realized Dom3 was also made for linux so I figured I'd order the linux version...but, I looked at my manual and it says Mac, pc, linux CD. So, now I figure the original CD will run on Linux....but now of course, I have no CD key cause I lost my original manual. SO, is there any way to retrieve my original CD key so I can install this on my new Linux box. If not, no biggie, I will order it again as it's worth it. Thanks...James.