Can't find server

Well as your question is a bit sketchy on the actual details I'll take it that the following is what is happening.

You have a server connected to the Internet and you can not get a connection on the network or Domain right?

Well there are several things to try here the first would be to go to the server and make sure it actually has a Net connection and is connecting. If it doesn't work at first unplug the modem/Router and allow about 10/15 seconds and then plug back in this allows the modem/Router to start up again and work properly they are quite often adversely affected by power surges and can appear to be working but not actually work.

Once you have a stable Internet connection at the server run the Network Setup Wizard and make the server the primary Internet Access point and allow other computers to connect to the net through the server. Then run the Network setup wizard an all the workstations with then connecting to the net through another computer on your network and that should get things working. If they do not work and you can not connect to the server you'll need to unplug every Hub/Switch allow then to remain unpowered for 10/15 seconds and then power them back up again.

[b]Please note here it isn't good enough just to turn them off you need to unplug them.[/b]

Col

About for 2 months, i can't access some sites like bleach-network.com and animetake.com on my GoogleChrome, Firefox, safari even IE. I don't know why because previously it was just fine. Then i tried using Opera, it loads fine only when i turn on opera turbo. But if i turn off Opera Turbo, i can't access the site and get message "Couldn't locate remote server". Why can this be happen? Does that means their server are down?