I’m now running Ubuntu 7.10 on my personal laptop (it dual boots with MS Vista Ultimate, but defaults to Ubuntu). Of course I want to do it all, including connecting to MS Windows VPN’s.
The short set of instructions over at tipotheday were spot-on.
My only addition would be to have the Ubuntu 7.10 install CD (or ISO) handy. Personally I used the command line (CLI) version, worked a treat.