Do you mean this one? http://www.spellsofmagic.com/read_post.html?post=254794
From what I've gathered about spiritual "werewolves" and therianthropes, the "shifting" process is meant to be purely mental and/or spiritual. Getting really into changing your shape mentally will cause physical sensations, but you're not going to actually turn into a wolf on the physical plane...
I think learning to disassociate from your human shell is a really good skill to have, but ultimately you are stuck with it and have to learn to live around it rather than get stuck on changing it. Just my 2 cents.
physically you cannot transform into anything else. if the meditation was to speak of releasing your animal spirit, or change your astral self into a werewolf, then i'd give it a little more credit. it doesn't sound that way though, so i'm going to say no, the meditation does not work. werewolves from what i have been told are astral beings, not physical ones, so you cannot physically become one.
if the meditation was to help you gain strength of a werewolf, or raise your anger, or something of that matter, it would probably work, but as is, it's a waste of time, so don't bother.