Movie Summary
Download tMorph.lua (http://www.mediafire.com/?3acv2p6zx6ivsm2)
The code wich you need to edit in tMorph.lua
local events = CreateFrame("Frame")
function events:UPDATE_SHAPESHIFT_FORM()
local form = GetShapeshiftForm()
if form == 3 then -- cat form
Morph("player", 38150)