But Klein and Shenkman, both now 52, realized there was something even more productive he could do: provide free advice on special legal issues confronting those with MS and other chronic diseases. ???I could go lick stamps, but I feel I can give more back using my special skills,??? says Shenkman, a New Jersey lawyer/CPA/M.B.A. who bills $500 an hour and has written 34 how-to legal books, some ai