i had this problem with a few pages... if it happens again try what worked for me:
goto start -> run and type cmd.exe
type "ping www.
(WEBSITE YOU WANT).com"
and type the IP address in the address bar of firefox or internet xplorer or something...it should load...it did for me, and then when i tryed going to the site with the "http://www.
(WEBSITE YOU WANT).com" it worked
lol