I have copied over my site from another server ( Folders containing the site ) and when i use them on my new server (2008) i get a login dialog when i try to access pages that have their aspx page located in a subfolder. If i use the login dialog and login with a valid account on that server, IIS will give me a 404 error ( File is physically there on my server).
My first thought was this was NTFS rights issue, but it does not seem to be the case. I have set owner to administrators group, and i have also tried giving the everyone group full control with the same result.
All the aspx pages in the root folder function as needed.