Though you never say so I assume you are having launch issues?
Since it is Steam I suggest you do this:
Go to the Library portion of Steam
Right Click the Silent Hunter 5 link
Choose Properties
[crap] I forget which tab it is but I think it is the 3rd one in
click the tabs until you find a button to validate local cache
Click that button and go have a beer.
My first install from Steam had over 650 bad files in it. This fixed the issues.
