I can't say what the problem might be but the link below shows two methods for setting up a hosted wireless network. You can also try the link for connectify software which is just a user interface that makes it easier for some people.
It's important to note that a hosted wireless network is made to share a wireless connection with other wireless devices.
The hosted wireless network isn't made to share out through an Ethernet connection in any way shape or form, though it may be possible to do so you may end up with an unreliable network and there are no standard tutorials to set that up. http://winsupersite.com/article/faqt...ion-wirelessly