<<Disclaimer: Verify this information before applying it to your situation.>>

Thanks everyone for your replies.  Here goes.

Websites/casein:

    http://www.gfcfdiet.com/
    http://www.nomilk.com/
    http://www.mit.edu/afs/athena/user/k/ekevles

Website/lactose:

    http://ourworld.compuserve.com/homepages/steve carper/

Website/gluten intolerance in autism:

    http://osiris.sunderland.ac.uk/autism/treat/html

Listserv for no-milk:

    [log in to unmask]

        *send a post with "subscribe no-milk your name" in the body.

Also, one list member reminded me that lactose intolerance can manifest
itself when villi has been damaged due to accidental gluten ingestion.
Therefore, when villi regenerate, dairy may be reintroduce gradually.