Connecting From a Remote LAN: gateway to gateway

Greetings,

Background:
I have configured two sgs360R gateway routers. One is in head Office the
other 20 miles away. I have configured a tunnel between the two.
(I used technical support at symantec and they verified that my tunnel is
good and that the issue may be SBS permissions or settings.) The user at
remote location is logging in as a Domain Admin.

Problem: I can see the computer(Server management-->client PC's) on the
remote LAN BUT it cannot access any of the files in the Head Office. This PC
is regularly on the Head office site and can see all data. We physically
moved it to the remote location and it can see nothing.

Remote location:
Gateway 192.168.0.1/255.255.255.0
Head Office:
Gateway 192.168.10.15/255.255.255.0

Any help or nudges in the right direction will be greatly appreciated.

Liam

 

I am able to do the following:
run: \\severname\share_name and I can see the share.
BUT
I does not logon and do authentiaction at the remoe location?
Any ides?

Liam