Hi Nick,
The setup I have been trying in the first place is Transparent In-line Bridge, which works ok but not with pppoe as per my original message.
Maybe I am wrong but if I have two interfaces on the box ( in a stand alone mode ) and setup the static routing then why would that not work as a router?
I am referring to just the routing part of traffic in and out with nothing else which is what I need.

If I use the DMZ how would I route it? my wan and Lan would be on the same subnet?
Thanks again.