Vista Tutorial - Using Ethernet Activity To Wake A Sleeping Computer

Hello,
I have always run my 360 through my laptop to give it a connection to the
internet via Ethernet cable. Not only does doing this provide a seamless
connection, but it also gives me the greatest bandwidth when I want to use
the 360 as an extender. However, to conserve power, I recently changed my
power settings from "Always on" basically, to "Sleep after X amount of
Minutes of Idle Time". I love it because it still wakes up to record shows,
my PC should last a little longer now and all the while I am doing my part to
conserve energy. The only problem is when it is sleeping my 360 does not get
the internet connection bridged to it. So I was wondering if anyone had a
possible solution or had an procedures on how to make the Ethernet Card wake
the computer when it recieves data that a 360 is trying to utilize it.

Thanks