If you want to share via a USB wireless adapter you'll need one that is capable of acting as an access point. But honestly this isn't ideal and will probably cause a lot of connection headaches.
You can get a wireless router for £40 or if you have a router already just buy a wireless access point to add wi-fi to your network. It'll save a lot of messing around trying to share the connection via your PC.
You can get a wireless router for £40 or if you have a router already just buy a wireless access point to add wi-fi to your network. It'll save a lot of messing around trying to share the connection via your PC.