Such a setup is going to be too hard on most folk and without some practice you can't usually pull it off.
Try VIRTUAL ROUTER and hope.
Hey guys I have a setup which goes like this. Modem-->Wireless Router-->Wifi/Laptop-->USB to Ethernet Adapter--Ethernet Cord-->Xbox 360. I bridged my Wifi with my local area connections which is the adapter and every time i try to connect to xbox live i get a ip address error.Can You Help Me Quick I have some friends coming over to play and now it just randomly stops working. - See more at: http://www.tomshardware.com/answers/id-2700317/address-error-fast-response-emergency.html#sthash.8soBWMkW.dpuf