@ eKtOjtVM : I am Using Leonovo IGRS and it works Perfectly Fine for me. Here is the procedure to configyre In brief :
1.Connect your Modem to One laptop and switch On the WLAN Button on that laptop.This machine will Work as a Server.
2.Switch on the WLANS of all other laptops.These Computers will act as clients
3.On the Server computer Configure your IGRS profile.Select "manual Configuration " --> "Use internet Connection sharing". Then select " Server mode".After that Give an SSID (e.g 2, 3 or any Integer ) a 5 digit password and Remember to keep the Sharing as "Share" and Not open.Use WEP as encryption.Also remember to use "Connect to clients using WLAN connection"
4.On the client computers Configure the IGRS profile as above.You have to select "Client mode " in these computers.
Thats it.
We live in a college hostel and each of us Share the Internet connection using Leonovo IGRS.Its working perfectly fine for us.