Login prompt on sites default page everytime I install CF

I went through this headache months ago with my Virtual Dedicated Server when I was trying to install Coldfusion 9.  I eventually gave up and reverted back to 8 because after several weeks of pulling out my hair I didn't even come close to finding a solution.  Well, now my hosting company has updated their Plesk version, and I'm getting the same error regardless of whether I try to install CF8 or 9.  Everything is great until I setup IIS under the Web Server Config supplied by the CF install.. then I get login prompt asking for a username and password everytime I try to visit the site.

Currently, the ONLY page on the entire server I can view is the CF Admin page from the server itself... anything outside of that does not work.  Mostly it's SCL errors (when viewed from the server) but I have set all permissions on the vhosts directories, etc.  Still nothing.

I am going out of my mind here.  It took me a long time to realize that I had to use CF 8 instead of 9 last time, and now that my hosting company has upgraded to a new version of Plesk, I am stressed to the max.  My entire business is down because of this and nothing I have tried, googled, searched for in forums, etc. has worked.  I know it's obvioiusly permissions on something, but I have looked everywhere and nothing is pointing me in any sort of direction as to what the issue is.  For the life of me I will never understand why I cannot just install CF to work with IIS without having to do 80 hours of research.

Any help would be greatly appreciated.