It turns out that there is an unfinished feature in Windows 7 hidden away, a developer has found a partially completed feature that will allow any laptop to turn into a wireless access point, allowing all Wi-Fi enabled devices to share that connection. All you have to do is install a small piece of software and away you go
Windows 7 - Your Next Wi-Fi Hot spot | Windows 7 News
Windows 7 - Your Next Wi-Fi Hot spot | Windows 7 News