When you say "but i am unable to connect to internet". How far does it get.
I do not have broadband but dial up. On this, not only does the username and password have to be correct. The phone number and the computers unique code number has also to be correct to do the handshake. The fact that you are using a different computer, with it's own unique code may be the problem, no handshake.
I have a network with X\P and it was so easy to setup. The slave machine can make this machine ( master) bootup. Wake up on lan. It can make this machine dial out, click I.E. on the slave. We can browse on both machines with no visible degradation to the 56k connection.
Try networking again, it's worth it.