How To Get Started With Hand Cycling I sustained a knee injury about a year ago and it's looking like I won't be biking anytime soon.  I thought that a good alternative would be to get into hand cycling.  I am having a hard time finding information on purchasing a hand bike.  

To give information about my situation:  I am still able to walk.  So, I need a bike that would work for someone with legs.  When I was able to cycle, I was biking 100 to 150 miles per week (occasionally more) and averaging about 18 mph.  My rides would range from 20 miles up to a century.  I see no reason why I wouldn't get into hand cycling enough to want to get up to that level again.  Does anyone have any advice, help, or resources to offer to help me find a proper bike?  Thanks.
Feel free to edit this answer to add more resources.

Hand cycling is a Paralympic sport, administered by the UCI. There are links at the bottom of the UCI page for all world regions.

Here is a link for Disabled Sports USA, describing different kinds of bikes and listing local chapters and a bunch of useful links.

The United States Handcycle Federation seems to be mainly about competition.

Cycling Australia has a Para-Cycling page, there is the Queensland Sporting Wheelies and Disabled Association, and Wheelchair Sport NSW. I'm sure there are bodies in each state, but a quick search didn't locate them.

Good luck!