Ok well then yes, go thru that process and see what happens.
Just for the heck of it, I downloaded IE8 for Vista via Soft Pedia and it reinstalled IE8.
http://download.softpedia.com/dl/ca...internet/browser/IE8-WindowsVista-x86-ENU.exe
You can give that a try as well.
The only thing about this is Softpedia brands this installation with "Windows Internet Explorer provided by Softpedia" But all you need to do is open regedit, search for Provided by softpedia, then click on Window Title and rename it to whatever you want.
As you can see below, I changed it to Provided by Osiris