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 averaging once a week. I followed the “Why does installation of the latest VPN client or uninstall of the previous VPN client fail?” section in Novell Border Manager Troubleshooting Guide, and uninstall network adapters’ bindings, I got more serious crash caused by ndis.sys.

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

Thank you in advance,