Our diagnostician says the only difference in HFA and Aspergers is the spelling

In actual practice there isn't much difference. In reality if your child has language difficulties (other than pragmatics) after the age of 3 they can't be Asperger's as one of the diagnostic criteria is normal speech. My oldest son is much more like other kids with Asperger's but because of his speech delays and language issues his diagnosis is autism (and probably HFA but that isn't a recognized diagnosis here). However, as young children there certainly isn't a clear line between those two diagnosis.

What I was told at the hospital who did my son's Autism testing and diagnosis is that the only difference between the two is that if the child had a language delay when they are young then they are considered HF and not Asperger's.

Yeah, my HFA l8-year-old daughter tested as gifted...but she doesn't have the "asperger" personality of talking a lot and sharing obsessive hobbies with anyone who will listen but not knowing when to quit. My son is like that!! but not my HFA daughter. So I don't think that the difference between HFA and aspergers is intelligence. Although my HFA daughter is very gifted, she likes to play quietly by organizing her dolls or reading on her bed. She is in a typical class because she is able to keep up with her peers with learning, but she still has lots of autism symptoms, such as hitting herself when she is upset or wandering off in the middle of a game or when someone is talking to her. . Anyway, I also heard that what Jenny Walker says is true.

I wrote "had" but meant to write,"has" HFA. Sorry for the type-o