Setting up ad hoc network between two laptops for sharing internet con

Hello Teachers here,

I have two laptops

laptop 1 with windows vista home premium
laptop 2 with windows XP service pack2

I want to set up a wireless ad hoc network by laptop 2 (it has internet) and share its internet connection
so that laptop 1 can use it. I have been able to set up ad hoc network but unable to share the internet connection.

I did the followings:

1. In laptop 2 (has internet), in the advanced tab of the Wireless network connection properties, I have checked the
option - Allow other network users to connect through this computers internet connection.

2. I have set IP addresses as follows:

Laptop 1:

ip address 192.168.1.1
Subnet mask 255.255.255.0
gateway: 192.168.1.2
dns: 192.168.1.2
alt dns: blank

Laptop 2:

ip address 192.168.1.2
Subnet mask 255.255.255.0
gateway: blank
dns: blank
alt dns: blank





All settings are for Wireless network connection properties. Have i done any mistaken?

Should browser (internet explorer/ firefox) settings be made?

I am a novice. Pls help me in solving the problem.