The connection has timed out

Hello,
i am using windows 7 and also using aircel gprs for connecting internet.i can't open "www.accet.in" the following error will be displayed .please solve it for me.
The connection has timed out



The server at www.accet.in is taking too long to respond.




* The site could be temporarily unavailable or too busy. Try again in a few
moments.

* If you are unable to load any pages, check your computer's network
connection.

* If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.