I managed to install Border Manager VPN Client 3.8 on my Vista laptop. Six months later, I found out that vptunnel.sys is the reason causing my laptop crashed once a week.

I tried to uninstall VPN client 3.8 through the Windows control panel, but it refused with the following message "Impossible to indentify OS". It was the same message that I received when trying to install VPN client 3.8 the first time.

Does anybody know how to uninstall Border Manager VPN Client 3.8 from a Vista?

Thank you in advance,