VaporSec, Mac to Mac

Hi I am looking for a 'How to' to use VaporSec to setup a VPN between my laptop and a remote network. My iBook (10.2.8) at home is behind a wireless linksys router but I move it to other networks and dialup. The remote Mac runs OS X 10.2.8. It runs IPFW and NAT ... with a 192.168.x.x network behind it. I want to VPN to that Mac so that I can access the fileserver and other Macs behind the firewall. I see that VaporSec can be used as a VPN client to other VPN servers ... but I can't find info on how use it to make two Macs talk. thanx Roger