"Rich" wrote in message
...
I am unable to access www.equifax.com using my Vista Ultimate SP1 system.
Both IE7 and Firefox are unable to connect. I am running Norton Internet
Security 2008. No other sites I have tried to access are blocked. I have
checked for restricted sites in IE settings and have disabled all NIS
protection. Parental controls are not turned on. I am able to access the
site using two other systems on my network that are running XP SP2 with NIS
2008. Any ideas what is blocking this site?

Have you checked the "hosts" file?

C:\Windows\System32\drivers\etc

IE uses it, but I'm not sure if Firefox does. It can be used
to return the loopback address for certain lookups, maybe
equifax is in there with 127.0.0.1 as the IP address. If it
is, remove it (you may have to scroll down to see all entries
in this file).

Are there any proxy servers involved? Some web filter may
be inserted between your browser and the ISP (as a proxy)
and be malfunctioning or misconfigured.