Instead of making your PC a wifi AP, try setting up an ad-hoc network and sharing it. Setting up and ad-hoc wifi network is under "Network and Sharing Center" (or just open the start menu and type "ad-hoc"). Then turn on internet connection sharing for your main ethernet port through you wifi adapter. Detailed instructions here http://lifehacker.com/5369381/turn-your-windows-7-pc-into-a-wireless-hotspot

Instead of making your PC a wifi AP, try setting up an ad-hoc network and sharing it. Setting up an ad-hoc wifi network is under "Network and Sharing Center" (or just open the start menu and type "ad-hoc"). Then turn on internet connection sharing for your main ethernet port through you wifi adapter. Detailed instructions here http://lifehacker.com/5369381/turn-your-windows-7-pc-into-a-wireless-hotspot