Hi Tom
Run the command csvde -f filename.csv to export the contents of the AD to
the file filename.csv. Import the data into excel (specify thet the source
data is comma separated), and then search for the header 'memberOf'. That's
the property that contains the groups a user is a member of. Or, the other
way around, the property 'member' holds the users who are members of a given
group.
HTH,
Örjan