Virtual Router is a nifty tool that turns any Windows 7 or Windows Server 2008 R2 system into a Wi-Fi hotspot.

Using Virtual Router, users can wirelessly share any Internet connection (Wi-Fi, LAN, cable modem, dial-up, cellular, and so on) with any Wi-Fi-enabled device. Laptops, smartphones, netbooks, wireless printers -- all can connect to Virtual Router just as they would any other access point, and the connection is completely secured using WPA2, the most secure wireless encryption.

Download: virtualrouter.codeplex.com