dave said:How do you attach the lens together? An adapter of some sort, I support.
Yep...
Check Amazon for Fotodiox 52mm - 55mm, 49-52mm (etc., depending on the size of your lenses) Macro Close-up Reverse Ring. It's got male threads on both sides and it screws into the lenses.
If you want to play with the technique using a variety of lenses, amazon also has step-up and step-down kits (so you only need to get one reverse ring). Good things to have in the bag for this kind of monkey business (and for filters and for a lot of other reasons, too).