HOLD IT. Okay, if you're looking at the Wireless you see in the icon in the tray and "three different places' THAT IS NOT YOUR ASU-24005g, that is your neighbor's INTERNET. It is like you walk outside and there are three different cars, you try your keys in each one, your neighbors would not be happy about you trying to steal their car, they won't allow you to 'steal' their Internet.
You should know your Admin Password, if not then you need to seek whom is responsible for the router. Tom's Hardware does not support helping to 'crack passwords'. You also seek someone technically savvy to set this up, just pulling power cords and plugging in LAN cables isn't going to cut it, this is technical work and you do NOT have the skillset to deal with this.