Hi,
Some of my favourite RSD charities are:
http://www.rsdhope.org/ - they raise money for RSD and also do a lot of research, clinical trials etc.
http://www.rsds.org/index2.html - help raise awareness and money for RSD.
http://www.tkorsds.org/ - Rock Out To Knock Out RSD help provide poor people with the medical equipment and treatment they will need. They also help raise money for UCLA
Hope this helps,
Alison