If you want to publish a book based on your experences with AS or something related to that, I have heard Jessica Kingsley Publishers I have herd is famous for publishing books on Autism and Asperger's. I think that would be a good start.
Here is there website
Jessica Kingsley Publishers
Last time I recall, They had locations in London UK and in Philadelphia PA USA.
I am also thinking doing something with them in the future when I get the time to. I think it's a plus when they are in you backyard
I wish you the best of luck with you publication 
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My AS has its Up and Downs, But I think that it's for the better. The world would be a less interesting place without me and my AS.