vpn connection failure

[Eric Beversluis <ebever researchintegration org>]

I'm trying to get VPN to work on my Ubuntu 7.04 installation with
NetworkManager Applet 0.6.4. I'm using the same IP address, user name
and password that works on a vpn connection on my Windows box, but here
I keep getting this error message:

"VPN Connection Failure
Could not start VPN connection due to a connection error.
VPN Connection failed."

I can't seem to find anything on the NetworkManager page or elsewhere
that gives any instructions on configuring the VPN connection. Can
anyone help with this? (PS--there is no firewall running on the box
right now and still no connection.)

Thanks.