Summer group for students with special needs

I work as a at a school counselor in a private school in Norristown, PA for students diagnosed with High-Functioning Autism, Asperger's, mood and anxiety disorders.  About 90% of our population has an avid passion for playing video games, as do I.  I am thinking of running a club this 2009 summer that has video games involved. 

My dilemma is this, the kids can't just play video games, there has to be an educational/therapeutic aspect to our groups.  I was wondering if anyone has come across some sort of curriculum that teaches kids essential life skills while involving video games.  I am currently looking for such curriculum or group format that would allow me to teach some skills to our students while involving them in their favorite activity.  Any help on this matter would be greatly appreciated, thank you.