Sounds like a DNS problem. Your ISP may have switched servers or taken off the one you are pointed at. Definitely call them! OUr ISP did this to us back when we ran NT4.0
From: School Information Technology Discussion on behalf of Ray Ballou
Sent: Tue 9/26/2006 3:04 PM
To: [log in to unmask]
Subject: Re: trouble accessing google and amazon
I am able to access and use gogole by IP
but not by URL.