Hi darktatami,
At this time I have not updated most of my XNA games, but many people already have done successfully (first couple of games are not hard, the converting the Racing Game can be a couple hours of work).
Please stay tuned on
http://XnaProjects.net, where I will post updated XNA 2.0 compatible source code and setups for all the game as soon as I find some time to finally do this :)
http://abi.exdream.com