It would appear you are confusing the capabilites of the equipment you have The Bluetooth adapter will not normally be useful for a home network. It is meant to connect bluetooth devices to a computer.
To setup a home network all you need is:
1. A DSL/Cable modem for your internet connection
2. Connection sharing router.
3. Computers with an ethernet adapter in them.
4. 3 Ethernet cables to internconnect them all.
First of all ensure your internet connection is working properly by connect one of your computers using an ethernet cabe to the DSL modem directly.
Once you are sure you can connect to the internet, remove the cable connecting the computer to the modem on the computer end and connect it to the router. On the router you should find a port labeled WAN, this is where you connect the DSL modem. Now take another cable and connect the computer you just tested the internet connection with to one of the other ports labeled LAN. There are usually 4 of them and you can use any of them.
This in a lot of cases is all you need do to get it working. Do not use the USB port on the modem to connect anything. Most routers do not support a USB connection to them in any event. If this gets computer #1 working then all you should have to do is connect computer #2 to another of the LAN ports.
There are also a number of things you should do to setup your router, first an foremost change the default password for the administration account and make sure remote management is NOT enabled. You will, unfortunately, have to read the manual for the router to learn how to do this. It usually involves using your web browser to go to the router's IP address. While there a number of default addresses used, they are somewhat manufacturer specific so I can't help you without knowing what brand and model router you have.
Hope it helps and Happy New Year
Panzer, December 2006