HELP Please!!!

[Pete]

My computer refuses to access certain web sites. I am running Windows XP and
am connected thru a cable modem. I have tried shutting down my firewall and
my anti virus software to no avail. I get the message "Unable to find site
or DNS error" the typical screen if you type in an address incorrectly.
However I know that these are the correct addresses. Any idea what could be
causing this? One of the sites I can't access is the Windows update site

 

[Mike Mulligan]

Perhaps your ISP's DNS server is down.

Mike Mulligan

 

[Pete]

Don't think so, this has been happening for a month now..... any other
ideas?