Hi Bill if you read through the attached topics you will possibly get help with your problem. SS2008 plays well on machines with Windows7 software, particularly if you can swop the Questviewer files as mentioned in those topics.
http://forum.shipsim.com/index.php/topic,24036.msg318883.html#msg318883
http://forum.shipsim.com/index.php/topic,27685.msg368132.html#msg368132
http://forum.shipsim.com/index.php/topic,26449.msg349160.html#msg349160
Regards,
Angus.