Good question, but I'm pretty sure that it is not possible, sorry P.S. There is a small chance that I could be wrong... But dont get your hopes up
There is no way that this can be done. SS2006 & SS2008 are two totally different games which cannot be mixed.
Simple answer to that one is:- It won't.
http://80.95.161.114/shipsim/forum/index.php/topic,21176.0.html
thanks fred! it was posted 3 days ago i think 4 days yesssssss