Multiple Meshes

this question’s probably been answered about 600 times, but i personally couldnt find it anywhere.

how (without python, if at all possible) would i replace one mesh with another. basically, make the character look different.
its for this: http://blenderartists.org/forum/showthread.php?t=105798
and i want multiple, choosable characters

wow, im dumb. theres the block. lock dis shit