Hiya,
Not got the steam version, and my steam buying days are over unless they do away with discs lol
No idea if these links will help, i'm not the best searcher (faster to scan down pages i find hehe)
http://www.subsim.com/radioroom/showthread.php?t=192755
http://www.subsim.com/radioroom/showthread.php?t=211151
That might fill in most of the info you need