weiyan的回答是正解。
至於Router IP address, do the following:
From any computer, do "Start"-> "All program" -> Accessories"->"Command Prompt"
Then type "ipconfig" in the command line, you will see all information of the network.
Looking for "Default Gateway ......192.168.x.x"
This 192.168.x.x. (such as 192.168.1.1) is the router IP address.
Type "192.168.x.x." in the IE address bar, you will see a lot of the router options.
IF you cannot figure out what I am talking about, get someone to help.