Airtel Broadband Wifi Router | Which wireless router ?

Hi

I need to set wireless internet in my house. I have modem from airtel but now I also need WIFI connectivity in my house. How can I do that ? Can I buy any wireless router and attach to my modem or I need WIFI router from airtel only ?

Please guide

You can either by a WIFI router which comes with aDSL modem and use it alone.
Or
Simply buy a cheap AP, connect it to your modem and then use internet on your laptop. AP will act as switch. AP = Wireless Access Point.