You can tether them via cable, but I have never done the reverse tether that it appears you want to perform and by use of wifi only.
I read this as your Laptop has internet via the Idea Net Setter 3G adapter and you want to share that laptops internet connection with your Android Mobile through wifi.
You might be able to set up ICS (Internet Connection Sharing ) on Vista, however I have only done this with Windows XP and between 2 computers authenticated on the same domain, etc, and wired over Cat5 cross over cable, both of which were sharing a single 56k dial-up connection. Then turn your integrated wifi of your laptop open to connection for the Android Mobile phone, but I am not sure it it will work even if setting up ICS for Everyone which poses serious security risks with anyone around you finding this available connection.