Hi landman,
Seeing the many warm welcome comments and advice they have given you allready in:
http://www.shipsim.com/ShipSimForum/index.php/topic,12034.msg142010.html#msg142010
I was wondering, if you are having trouble reading those.
Because a. a., what you are asking here is well covered by those comments.
BTW: welcome again !
vr. gr. kind regards, Erik