Hi Joshua,
It is unfortunate that you have misplaced / lost / disposed the manual. That was the only place the License key was placed in SS 2008.
Please refer to this post which is a case like yours, but the only different thing is the way it was lost. You will understand when you read. This post is by the Administrator Fred. Please contact him and see if he can help you with your former User ID and password for the Forum.
http://80.95.161.114/shipsim/forum/index.php/topic,5671.msg57579.html#msg57579
Regards
vin_sun