Connecting computer to internet via router and ethernet cable help

[witchypoo]

Ok, so I have one computer and printer connected via ethernet cables to a wireless router which connects another computer wirelessly via usb adapter.

Now I have another computer that I want to connect to the same internet connection on another port in the router, however when I connect the cable from the third computer and the router nothing happens and I still cannot connect. The thir computer is using windows xp home and the other two are using windows xp professional.

Please help. I've tried creating a new network connection, but that did not work.

 

[raybay]

We need a more detailed description of your wireless router and USB adpater... in fact all the equipment you want to work together.... list how everthing now connects together.

 

[witchypoo]

Ok so the wireless router im using is an Atava G Router.
Connected to it is an at&t motorola modem in bridged mode.
a delll desktop computer running windows xp pro
and a samsung clx-3160 printer.

I want to know if it's possible for another computer to connect to the internet and access the printer if i plug it into another port on the modem.