Don't have this set, but here's some websites that might help you find what you're looking for. BTW, Lifelike was acquired by Walthers, so they may be able to help you get a replacement set of instructions. Good luck!
LifeLike website: http://www.lifelikeproducts.com/
Walthers: http://www.walthers.com/exec/productinfo/433-8624
and http://www.walthers.com/exec/page/press/2005/lifelike