it could be security software block the internet access. Or this link may
help.

Vista Internet Access IssuesVista can’t access the Internet because of
TCP/IP settings Vista can't access the Internet because of security software
Vista drop the Internet connection ...
www.chicagotech.net/vista/vistaieissues.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"mullenj" <mullenj@discussions.microsoft.com> wrote in message
news:9D318A11-FD16-4A8F-AA73-D097B180FDF3@microsoft.com...
>I am using windows vista home premium with internet explorer 7. When I try
> to open any web page it says connecting and web site found waiting for
> reply.
> Eventually it changes to page cannot be displayed. I have tried manual
> troubleshooting like connectiviy doctor, but it always says there is no
> problem and that I am connected to the internet. All of my messenging
> programs like AIM work fine. I have tried diffierent connections, but
> always
> the same result. Any help would be appreciated.
> -Jeremy