CD key help - not asking for one.

[Durallan]

I believe once the game is registered to a steam account it stays that way permamently, I have logged into steam on my father's computer and it shows me as owning all my games, just that they are all uninstalled, so I don't see a problem there, but tut tut! don't lose your manual again! I put all mine in safe places

disclaimer: not 100% sure...