I have added a new, additional Domain Controller (Windows 2003 Std R2) to the existing Domain (Windows 2003 SBS) for a remote office connected via VPN.
The users for the remote office were created on the first DC (Windows 2003 SBS Premium). A Security Group for both offices with the respective users were created. and in the GPO on the SBS server I have specified the Folder Redirection to be Advanced, and based on Security Groups.
Group A -> \Office1Users
Group B -> \Office2Users
When users in Office2 login their My Documents folder is still redirected to \Office1Users%USERNAME%My Documents