Hello there,
I have a son who has DS, Charley is 11 and goes to mainstream school where he has 30 hours support. He is doing so great, and is a wonderful person. Yes he has a moderate learning disability, but with support and opportunities he really is making fantastic progress. He is going to mainstream secondry school next year; we have just been for a look round and there is so much inclusion support and extra help these days. I'm hoping that he will be doing his GCSEs along with his peers when the time comes too 
Charley is a member of the family, just like the rest of us; there really is no difference. He leads a very full and active life: going to Gymnastics, swimming, school, clubs etc. We are currently supporting him to do things like fix himself a snack; he can use the computer independently, read (he absolutely loves books), play, and use the dvd player independently, he's fine he really is.Oh yeah, language and communication can be (is) an area which needs plenty of extra intervention. Charley has always had a private speech therapist (bit pricey but well worth it),and his speech is brilliant. He communicates using 5 or 6 word sentences fairly fluently. His communication is getting better all the time
We find DownsEd really really great for educational advice. They are an international research group providing loads of excellent resources and advice for families and individuals who have ds. They are based in Portsmouth, but are on the internet; have a look 
Charley was a wonderful baby too
, sooooo easy and is a perfect son, there really is NOTHING that we would change about him. He has loads of friends, and is very popular at school, Charley really enjoys life
Its difficult to express everything here, if you would like to ask anything specific, just mail me ([email protected]), i'd be happy to tell you anything that might help.
I hope this helps; yeah its going to be an anxious time, but try to be positive, and most of all enjoy your child's babyhood. I spent too much time worrying about Charley's future, and as a consequence his babyhood sort of whizzed by and I'm sad about that.
The positives outshine any negative about a million to 1 
with much love, Tracey