I would check the router firmware first. this link may help,
Vista Internet Access IssuesVista: Can't access some secure web sites ...
don't fix the problem, try to use FireFox because some web sites and coding
may not be compatible with IE 7. ...
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
"Insspirito" <Insspirito@discussions.microsoft.com> wrote in message
news:60143B99-881C-4E6E-8FFE-F9F911572495@microsoft.com...
> Hello, I'm haveing very wiered problem!
> I'm getting "Internet Explorer cannot display the webpage" on some
> websites.
> I can access all of the websites out there except very few are kida
> blocked?. I know those sites are not down as I'm reciving email newsletter
> from them. When trying to diagnos the problem I'm getting "www.xyz.com" is
> not set up to establish a connection on port "world wide web service
> (HTTP)"
> with this computer "
> Any ideas ? My suspects are McAffe and PunkPuster
>
> Thank you !