My wife just went through a HORRIBLE ordeal with kidney stones. had to go in and laser the stone, then remove them. It was the most painful thing she has ever gone through...and I sat with her through a natural child birth!
I put her on Calci-Clear. (www.calci-clear.com) Its a dietary supplement that claims to address 5 mechansims of calcification. Its relatively cheap and does not employ any drugs. Just started, so I will let you know how it goes.