After getting my Ipad2 (Thanks to Thoughtworks!), I wanted a Wi-Fi connection since the Ipad2 had Wi-Fi but no 3G. Wi-Fi routers cost anything from Rs.1500 to Rs.10,000.
Question was: How do I convert my laptop to a Wi-Fi router?
Connectify is the answer.
The basic (lite) version is free and can easily used for providing Wi-Fi connection to the Ipad2.