|Can you access a site on port 80? Is port 80 the problem? Port 80 is normally used for http, so by using telnet we test between a browse issue and a port issue. We still don't know what your issue is.|
Try a linux live cd if all else fails.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10