Catch my Point

http://mindsharpblogs.com/wayne/archive/2005/06/15/497.aspx has great information on using custom source (AD Query) to import users in Active Directory Groups into SharePoint Profile database.(&(objectCategory=Person)(objectClass=User) | (memberOf=CN=Corporate East,OU=Administrative,OU=Distribution Lists,OU=East,DC=domain,DC=local)(memberOf=CN=Corporate West,OU=Administrative,OU=Distribution Lists,OU=West,DC=domain,DC=local)(memberOf=CN=Corporate EMEA,OU=Administrative,OU=Distribution Lists,OU=EMEA,DC=domain,DC=local))Only Users in the AD Distribution List group will beimported and not any users from nested groups (if you another group as its member)