How do I get the SID / session of an arbitrary process?

Question

I\'m writing a program to enumerate through processes, and I want to find out the SID/user ID and session of which the specified process is running under (i.e. i have

Answer 1

WTSEnumerateProcesses works like gangbusters here:

http://msdn.microsoft.com/en-us/library/aa383831%28VS.85%29.aspx