Windows, VPN, and Wireless

[eva01]

Ok so I cannot get my mother's VPN to stay connected over wireless for more than 5 minutes.

Why is this happening?

Is it because the computers here do not have static IPs but change from the router?

Anyone want to walk me through on how to make this work for longer than 5 minutes?

[eva01]

Ok so I was connected for a total of 4 minutes 30 seconds this time.

The error I receive is

"The routing table cannot be altered after the Contivity VPN connection has been established.

The Contivity VPN connection has been Closed."