Windows authentication won't logon?

Hi,

I seem to be going round in circles trying to get IIS 7.5 on Windows 7 to accept my domain logon?

I have domain users in the administrators group on my local machine.

But when I try to navigate to a website on a UNC path running under IIS on my local win7 machine all I get is..

But I do, I can navigate to the folder and view all the files of the website and as mentioned my domain account has admin rights over my local machine, so why can't I logon to the website using windows authentication?

A username and password prompt appears, but it won't accept my user credentials?

I've even created a local account and set the UNC path to allow access by EVERYONE but it still refuses to let me logon to the website.

Any ideas