If this sort of thing is likely to land on your lap regularly, can I recommend the Active Directory Cook book from o'reilly.
Feel free to drop me a PM as I do a lot of gubbins around AD, groups and users, I don't get the time to drop by as much as I used to but I should receive a mail altert and I've a lot of VBA/S already set up to pull this sort of stuff.
Dim strgrpDN As String
Dim objgroup As Object
Dim objmember As Property
strgrpDN = "CN=TOC_TURNOVER,OU=Groups,DC=Delta,DC=com"
Set objgroup = GetObject("LDAP://" & strgrpDN)
For Each objmember In objgroup.members
Debug.Print objmember.Name
Next
Dim strgrpDN As String
Dim objgroup As Object
[b]Dim objmember As Property[/b]
strgrpDN = "CN=TOC_TURNOVER,OU=Groups,DC=Delta,DC=com"
Set objgroup = GetObject("LDAP://" & strgrpDN)
For Each objmember In objgroup.members
Debug.Print objmember.Name
Next
I believe that by default an authenticated user of the Domain should normally be able to Read group membership information from the domain but this can be altered to improve security.