i think in order to 'train' your cat you have to understand some basic behavior. why cats do this or why they do that.. contrary to popular belief scratching is not merely to sharpen their claws. there are a few good books on the market which tell stories of 'misbehaving' cats in story form(so its not boring)

hiss and tell- pam johnson bennett
is my cat crazy-john c wright and judi wright lashnits
and the cat who cried for help-dr nicholas dodman dvm

these books are easily available at kino/borders

__________________
prevent a litter fix your critter
ffss