In the Router admin (192.168.1.1) use static mode..

Enter IP: 10.xx.xx.xx
Enter Gateway: 10.xx.x.xx (both should be gotten from your existing connection, else ask someone in your area who has the same connection. technically IP has to be in the same range and free.. any free ip within your area's range will do)
Primary DNS: 203.197.12.30
Secndary DNS: 172.31.6.5
Tertiary DNS: 172.197.12.42

That's it.. save settings..

Now in your TCP/IP properties, make sure to set the IP adress and DNS settings to automatic..

Now use https://loginbom.tataindicombroadband.in:8443/home

to access the net.. You only have to login via one system on your wireless network.. and the net will work for all systems connected to your network..