Strange SBS 2003 Setup

[datarunner]

hi all

got a strange one here. have someone who has around 3 pcs connect to a switch which is then connected to a 2 NIC proxy server - one NIC connects the proxy to the local lan and the other NIC goes out to a router.

they want to add SBS 2003 to this setup and im just wondering how to setup this via the internet / email wizard

any suggestions?

regards