OpenVPN add remote networked servers

[Ofloo]

What I basicly want to do is this

Setup a pfsense VPN on a VPS and I want to add a tunnel to that vps and basicly setup IP connectivity over that vpn to servers somewhere else through that VPS

I'm not sure this makes any sense..

<vps|pfsense>==> <internet>==> <pfsense|remote network="">basicly add the IP's from the vps to the remote network. as if they where physically on that vps network

How would i do this i thought using VPN/tap, but for some reason I'm not able to make it work, .. is there any tutorial or howto on this topic?</pfsense|remote></internet></vps|pfsense>