PLEASE DO THIS ONLY IF YOU KNOW WHAT YOU ARE DOING. IT MAY DESTROY YOUR COMPUTERS NETWORKING IF YOU DONT KNOW THIS STUFF.
Windows 7 and Windows 2008 R2 comes with this undocumented feature where you can set the computer up as a wireless access point. Not many people know about it but if the computer has a Windows7 logo on it you should be able to do this.
You just need to run a few commands and you are up and running. Here are the steps:
Open up cmd prompt (you need to run this with admin privilidges)
Run this command to setup the soft (virtual) AP:
**Netsh wlan set hostednetwork mode=allow ssid=Gupshup key=12345678**
This code sets up a new access point on your computer called Gupshup. To connect to it you need the key 12345678
This commands starts up the new virtual AP so you :
**Netsh wlan start hostednetwork**
And then finally this command turns off your firewall:
**Netsh firewall set opmode disable**