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.