www.autismhelpforyou.com I just found this site a few days back and cant believe my luck. This woman had delved into every possibility regarding biomedical and therapeutic intervention and has her own ideas on the links of autism and heavy metals, etc. She even opines on the possibility that autism may be early onset schizophrenia as the symptoms are so similar.
You would have to look at her site to really get a feel for all the fab work she has done and its all for free. She also has a number of free "teaching manuals" which she has developed herself. The site is a bit "all over the place" but if you take the time to look through it, you will undoubtedly find something of interest and definitely something which applies to your asd child.
Let me know what you think of this site. I have learned so much from her and can't thank her enough.