Pervasive Developmental Disorder HELP?

[oukrains at motown.ge.com]

Recently my son has been diagnosed with PDD  (Pervasive Developmental Disorder)
which is similar to ADD in many respects.

I have found very little information on this and was hoping someone might 
be able to send me some information or tell me where I might go to find
information on PDD. 

Thanks for the help.