I've configured a RRaS server on a Win 2003R2 server, and can connect via VPN to it just fine, and access all my work LAN resources.
Except for the DMZ.
Configuration:
LAN: 192.168.1.X
LAN Gateway: 192.168.1.4
DMZ: 192.168.2.X
DMZ gateway: 192.168.2.1
I've tried adding a static route to 192.168.2.0 with GW 192.168.1.4 without it helping any.