Hey folks!
Re-written from the ground up, this time with OOP (as much as I could manage for the moment), and a new Bezier curve overlay. Much nicer! Also the graph is now a fully scalable object, so the entire window can be any size you want.
http://adam.theoherns.com/2010/02/16/simple-speedometer-v5/
Still got a long way to go, but let me know what you think!
Adam