Trying to use router for networking only

I could not get 2 computers to ad hoc network together by running network setup wizard and wireless setup wizard....untill...after you run the 2 wizards restart right away, then all worked fine and I created a restore point.

 

Both computers are xp. Computer A has a wireless mobile broadband internet connection. Computer B no internet connection. Router not connected to the internet.
When I use the router for the 2 computer network, computer B does not see the wireless mobile broadband internet. With the 2 system ad hoc together, computer B does see the wireless mobile broadband internet.

What can I change on the router to make computer B to see the wireless mobile broadband internet?

 

ok.....

 

This time I was updating some drivers on computer B and the loading process crashed computer B. After that, my wireless ad hoc stopped working.
I could not get it working using the procedure in the earlier thread. This time when network and wireless wizard setup ask for a flish drive I used the flash drive and all is working now.

I still need the router question answered?

 

What is the mobile device and who is the carrier?