Netgear showing on network

[whiz]

Hi All,
I recently set up a small home network and all is running well but one thing is niggling at me. When I look at the available networks (Im running Vista) I can see my home network which is secured, my next door neighbours secured network and another simply entitled 'Netgear' which is unsecured. When I look at my network places on the laptop I have the desktop, the lappy and the netgear router all showing. Is there any possibility that the netgear showing on the available networks is my router? If so how can I check that it is mine and more importantly how do I secure it?
Thanks in advance

Edited to add that I connected to the 'Netgear' network out of curiosity and it allowed me to surf the web.