hi lemongirl..
unlike bizzy, i have just read your post for the first time and know none of your history.... but i have an autistic child who is 9.
it is challenging and exhausting and takes a tremendous amount of patience and love to survive!!!
it is a good thing that you now know what you are dealing with.
get in touch with autismnz, even if it is just to get info on what stratagies you can use to help you guys deal with day to day things.
it relly comes down to learning what sets them off and trying your best to avoid it.
being consistant when trying to teach them something essential (say, brushing teeth) as they do learn..it just takes time.
but be prepared for your world to revolve around the situation for a while...but it does get better!!!