Vista ISATAP Solution

This forum on "Microsoft ISATAP adapter" gives the solution to how to stop a Vista Windows computer from asking the user numerous times to disable the device.

http://www.vistaheads.com/forums/microsoft-public-windows-vista-networking-sharing/14897-microsoft-isatap-adapter.html

The user "Jeff" wrote "IPv6 is on in Vista by default-you can turn it off though.
--Go here,
--Control Panel\Network and Internet\Network Connections
--right click your network card>properties
--uncheck the IPv6 box

that'll turn off IPv6-then just disable the adapter driver

That's if it's causing you issues,".

In my case, the wired adapter card (ethernet) was unchecked for IPv6. I needed to uncheck the wireless card for IPv6.

User forums show Microsoft has disabled support in Vista for this IPv6. It is the new standard for internet names of website.

Malware review.

http://www.spywaregate.com/create-a-security-package-that-will-keep-your-computer-protected/

Gibson Research Corporation. PC Security

Gibson Research Corporation has free PC Security scans.
https://www.grc.com/default.htm

Try its firewall scan.