How to get net service provided username&password (beamcable)

Actually my brother know the net service provided user and password .
which was given by the network provided .
we had bought dink router for sharing the net through wire less.
when my brother login with net service provided user and password . at that time only I can access connetc to my laptop and access the net (google). after he logout in his system . I just see the page for asking net service provided username and password. in my laptop .
how to know network service provided password from my laptop when he logged in.

note: I am unable to acces my brother pc . just I get net(google) through router, when he logged in

thank you adv
 
Let's see if I understand;
  • new D-link router
  • two computers
  • both have access to the Internet (ie access google.com)
  • but system-A can not access system-B also not the other way around
 
Yeah your right sir. now my bother logged in . so I am using the net from my computer. now how can I get username and password of net service provider through my system
. the thing is can I know the password and username ? which is signed in other system now? from my system
 
. the thing is can I know the password and username ?
I am sure you understand that would be known as HACKING and it should not be possible.
Solving "..system-A can not access system-B also not the other way around" is a file sharing config issue for both systems.
 
Back