vpn disappears in Vista

Hi,

I seem to have a problem with vpn on Vista.
When i connect to the network at work, i can see my vpn connection (i am not
connected to it but i can see it which is fine since i dont need vpn while i
am in the office) but once i disconnect from the work network and i go home
with it, and reboot it...my vpn connection is gone. Its not in the network
settings anymore...and i cannot create it...

Is my laptop not setup properly for vpn? and if it isnt, how would i go
about making it so that i can see and use my vpn while outside my work
network?

Thanks!