Okay the SSID is what the wireless network is called. It is the name you see when you go into "view available wireless networks" in windows.

I am asking whether the network (or indeed any networks) is shown in this menu.

I am also asking whether your network has a thing called SSID hiding enabled. This makes it so the network is invisible, to connect to it, you must know its name already, and it is not listed i the connect to network screen.

Thirdly, i am asking you which security you have enabled. Wireless encryption (like a password) means you need the correct key in order to connect. As a further security measure, routers can also be set up to block access from unknown network adapters using a unqiue number on each adapter called the MAC.

I am asking which of any of these measures you use, as they could be causing your problem.