Unable to open web project....

Question

I downloaded a project from the web in c# I am not able to open any of the project files. It gives me the error the file path doesn't correspond to the url.The two need to map to the same server location.Http error:401 access denied. I have configured the virtual directory and it matches the url path in the webinfo file still I am not able to access the file.I appreciate any suggestion.Thnx in advance.
Thnx