Help with animating Gus (gingerbread man) please.

Okay, pasting the mirrored legs/feet does not seem to work for me at all. I can paste rotated arms/hands. The legs just dont do anything…here is a link of the file im using, maybe something is wrong with it ><. Thanks.
www.redmoon.ms11.net/images/gus.blend

bump

name the bones on the left and right sides EXACTLY the same, except on the left side have a .L and on the right side have a .R tacked onto the end