Hey Griff,
I was able to track down another outdoor organization worth checking out:
Disabled Sports USA
http://www.dsusafw.org/
Also, here is an article on Pete Rieke (1st paraplegic to climb Rainier). It's a completely different ability set, but the article is good in that it walks you through his psychological reaction to his accident and shows how transformative determination and optimism can be.
http://www.msnbc.com/news/536609.asp?cp1=1
More widely, here is a link page of resources regarding disability and rehab:
http://www.craighospital.org/J_sitesOfInterest.html
And you may want to check out the Mike Utley page Again, Mike is up against paralysis, but hearing him talk makes anyone want to push through their own personal challenges. He's also down to earth enough that you may think about writing him.
http://www.MikeUtley.org/
Great Attitude, keep us posted.