How do I setup pptp passthrough?

I'm trying to connect to a VPN and I've told I need to
enable pptp passthrough. I have an MN-500 router. Can
anyone tell me how to do that?
TIA, Gus

Assign a static IP to the PC (e.g. IP 192.168.2.2, mask
255.255.255.0, DNS and gateway 192.168.2.1).

Go to the router and change the DHCP range to start at
192.168.2.3. Set a persistent port forwarding for IP
192.168.2.2, and TCP port 1723 (enter same port on all port
boxes).

>-----Original Message-----
>I'm trying to connect to a VPN and I've told I need to
>enable pptp passthrough. I have an MN-500 router. Can
>anyone tell me how to do that?
>TIA, Gus
>.
>