Not sure that I fully understand this, but I'll give it a go.
Whether the wireless is encrypted, WPA, WEP, WEP2 is a setting inside your router. You need to communicate with your router to change this.
Different routers might use different addresses to communicate with them. ONE of my routers uses: http://192.168.1.1
. I type this in a browser and up comes the router. The router then asks for a username and password for more access.
If you Google the MAKE and MODEL of your router you should be able to find the address to communicate with it.
You need to make the change in the router.