Peter...Dearest Peter....you have no idea, I have built a machine, not just a machine probably the most awsome machine you will ever have the fortune to lay your eyes on. It LOUD...FAST...Powerful...if there was a tune to put to Envy it would be Bad To The Bone. Your Silly XP would play to the elephant march. Just make sure your robot is underweight because its you that has to lift it from the floor when the Awsome Might of Envy gracefully Puts it out of the arena with EASE!!!!!!!!!!!!!!!!!