The TOS forum sticky has some RSI info links and many of the self help and ergo ideas will be of help too.
TOS sticky thread link-
http://neurotalk.psychcentral.com/showthread.php?t=84
Other sticky threads from the TOS forum- maybe have helpful info relating to chronic / severe RSI injuries -
http://neurotalk.psychcentral.com/thread125577.html
http://neurotalk.psychcentral.com/thread135.html