Ever find yourself in need of getting others around you to share your internet connection whether it be from your wired ethernet connection to your connection via your cellular phone (Sorry, Verizon folks here need not apply since they are special). Well, if you didn't want to break out a separate router and sutff the alternative is to make your own wifi hot-spot. There are products out there that do this today but if you have an existing connection and feel like using it for the good of others around you you can try installing the Virtual Router from Microsoft. Although its in beta its totally free. Give it a try!
Virtual Router at Codeplex:
http://virtualrouter.codeplex.com