--you posted this in the useful websites portion of the spinal forum--specifically, in the area that deals with spinal stimulators--so only people looking for that very particular information are likely to see it.
I'd re-post your query in the spinal forum proper, or in the peripheral neuropathy forum, and then you are likely to get more responses:
http://neurotalk.psychcentral.com/forum22.html
http://neurotalk.psychcentral.com/fo...sprune=-1&f=20