I also have a ds with a writing problem, but he has not been diagnosed as having dysgraphia. He seems to just have a fine motor delay. He also hates to write with a pencil/pen/etc. because it's difficult. (He wears velcro shoes, pull-up pants, and has difficulty handling a knife and fork too.) He is not movtivated to write (or wear other clothes, etc.) He's been to OT for more than a year, plus OT instruction in school. He is now going in to 4th grade, and we've finally thrown in the towel. We have to get past the act of writing so he can actually learn to write (in the creative sense). He's been practicing typing on and off for a few years, so he's pretty good at it(he types at about twice the rate he can print or write in cursive). This year in school he will have a portable keyboard (alphasmart).
My ds does not qualify for an IEP (since there's no dysgraphia), but he does have a 504 plan. For that, all you need is a diagnosis from a doctor (ds's says he has a graphomotor impairment) and show that the disability is causing him difficulty in school. '
Teaching your child to type is an investment in hsi future. Even if miraculously he can write well tomorrow, typing is still a good thing to know. Start with this web site to work on it. You can always buy another program later if you want.
http://www.bbc.co.uk/schools/typing/