Setting up VPN w/ Pipeline 75

[RaptorRCPilot]

Ok, I am lost. I have a Pipeline 75 w/ version 5.1a running on it. I am trying to vpn into company network via Nortels extranet client. NAT routing is turn on. I need assistance to get this going. I found another thread on upgrading to a ver 7x of software for the pipeline, but for some reason I can not get the save file to xfer to my machine via a tftp program nor am I sure which version to upgrade since there is now two version 8x's out there.

Just got the modem and ISDN line connected yesterday, so I am not to worried about losing any config files (I wrote it all down when I got it to work (connection to the internet that is).

Thanks in advance,

Joey