Ok I removed the tuntap adapter, rebooted, and then reinstalled it. Prior to your response I finally was able to remove the tunnel adapter called aiccu (wasn't listed in the network controls of vista anywhere, and I was having a hard time finding it in the registry). Once all of this was done, the tunnel is now working successfully. I think the problem was when I ran the aiccu-GUI /u command, the service still seemed to be running at the time, and never was stopped, and at the same time the service wasn't removed properly (I had to remove it by hand in the registry), as well as the microsoft Direct pptp tunnel called aiccu wasn't removed by the command either. In vista it is very difficult to get around this especially considering that it isn't installed like a normal network device, or pptp connection, somehow it is embedded a different way. Either way the only way I could remove it was to uninstall the microsoft direct point-to-point network adapter in device manager (must show hidden devices from the view menu), and then reinstalled it. Perhaps that is a bit of documentation I might be able to introduce to the wiki for users who might have these errors in vista in the future. Thanks again for the prompt response, and I look forward to contributing to the community now that I have this information. Issue resolved completely.