Richard -
Log in to your AD server as a Domain Administrator and go to
Start\Administrative Tools\Active Directory Users And Computers.
When open, go to View and select Add\Remove Columns. Select the
columns you need (I select Name, Display Name, and User Logon Name
for my User List table) When you have your columns selected,
right-click on Users (in the Left-hand column) and select
Export List. I just send it to my Temp directory as Tab-delimited.
You can open it up in Excel if you need to modify any of the columns.
Save and your done.