Tried that Craig, just uninstalled/reinstalled IIS and it's still the same, strange thing is I've never seen this Yahoo page before and the problem is not restricted to VS the sites won't run on IIS either, but outside of my network I can browse the internet and send mail etc, very strange, it's definitely related to localhost and doesn't make any difference if I enter 127.0.0.1 instead of localhost
Regards,
Peter J. Kane
Pete