Q. Brian, Will I Need to Leave the Wireless Computer Connected to the Xbox In Order for This to Work?

A. Yes - My method will show you how to use your wireless computer itself as a wireless adapter so that you do not have to pay $100 for a piece of plastic from Microsoft.  If you sever the connection between the Xbox and the Wireless Computer it would be the same as unplugging an official adapter from the back of the Xbox, there would be nothing to send/receive the wireless signal.