Jul 07, 2009 10:49 AMfirstname.lastname@example.org|LINK
I think the issue is at IIS 7.0 end...
Unless you configured VS to use IIS instead of the internal development server, pressing F5 won't launch the app in IIS.
Have you configured an application in IIS and configured IIS to run ASP.NET? Have you looked at event logs or the IIS logs? Turn off friendly errors in IE as well so you can see the real message. Have you turned off the firewall or security software?
Can you get the default IIS page?