I don't believe that server or NT software is supported with the PC Share Manager.
There might be other share programs available, such as Twonky or Tversity, although I can't officially recommend any different program for any specific use.
There are a lot of threads on both, and perhaps one supports the server version you're looking for.
I just bought an LE40C630 (European version of the LN40C630) and I was wondering if I could access my media files, which reside on a windows server 2008 share, on my tv?
Only certain users (Active Directory) have access to these shares.
There does however not seem to be a windows server version of pc share manager...
Is there another way to make this work?