Bread-Bakers v108.n007.4

There's a good video at Breadtopia 
<http://www.breadtopia.com/make-your-own-sourdough-starter/>
that demonstrates making your own starter using whole wheat flour and 
unsweetened pineapple juice. The method is also described in Peter 
Reinhardt's latest book on baking with whole grains. Once you have a 
whole wheat starter, by feeding it with a different flour, you can 
move it to become a white starter, or a rye starter. Hope that helps.

~ irene