[kosmiq]

Long story short:
you must add an IR port yourself to the xbox so that it can connect to something.

here are a few tuts on how to do different remote power on/off mods:

http://www.xbox-scene.com/articles/smartswitch.php
http://www.xbox-scene.com/articles/controller-boot.php
http://www.xbox-scene.com/articles/p...controller.php
http://www.xbox-scene.com/articles/easy-xbox-onoff.php
http://www.xbox-scene.com/articles/rf-power.php
http://www.xbox-scene.com/articles/xir.php

hope that one of them will give you what you need...