Okay. You want your wireless router to have encryption (WPA), and a secure password so that your wireless connection isn't open to anyone with a wireless card.
I don't know the model number of your router, but what you need to do is go to Belkin's website and search for your router's configuration manual. It will tell you what everything does and what you need to do to secure your wireless connection.
http://catalog.belkin.com/IWCatSecti...tion_Id=200340
If you can't find the user manual, then let us know the exact type of router that you have and we will find it for you.