Need to find out who is in a global group?  Where I work, they don’t install management tools on our computers if you’re not in the security or server group.  Sysinternals to the rescue.

http://technet.microsoft.com/en-us/sysinternals/bb963907.aspx

We keep our users and group in a container named _users. I just navigate to that node and search the container for whatever group I’m looking for.  The group has a members property you can double-click to view.