Periwinkle's bud hit it right. Use a square point shovel, split them into two. Remove the top shell. Next, grab the pinchers and legs in one hand and pretend your using a hatchet and shake on firm strok downwards- watch out guts! This will pretty much get all the innards out, but you'll need to fine tune the insides under some cold water...

As far as cooking... throw all the halves into the pot, add a little Johnny's and allspice, turn stove on high. When the water hit a boil, remove your feast and munch away.

Downriggin :p