Vermi-composting

With the winter months upon us I was wondering if anyone out there was using worms for indoor food composting?  I moved from a place fairly recently where we had chickens, but not anymore, so I am looking to start a worm bin. Does anybody know a good place to find the worms? or know of any designs to recommend?  Any thoughts on these little wigglers?

There is a whole thread in this forum called Vermiculture.  Do a search on it and see what info is there.