Members() As IADsMembers;
Returns a collection of ADs objects that represent members of a group.
IADsMembers allows you to enumerate members in a specified group.
You can use the Members method to enumerate members of a group, for example, in VB you can use For Each User In Group.Members .
Dim GroupObject As IADsGroup
Dim Members As IADsMembers
Dim UserObject As IADsUser
Set GroupObject = GetObject("NTDS://YourDomainName/GroupName")
Set Members = GroupObject.Members
For Each UserObject In Members