IIRC, there was no exibition game between the Express and the Astros last year. It was two years ago, the year of the World Series team in 2005. Andy Pettitte started for the 'Stros and Wandy for the Express. I think it's an every other year affair, before that it was played in 2003, Astros started Lima Time. Last years game exibition opener at the Dell was Express v Hooks.
As for the teams, the only players not to make to RR in 2005 were Berkman and Clemens.