Danlisa, the Multiquote is working, but you forgot some things you must select more then 1 post and the button is nothing more then Selecting the posts.
step1:
pick the posts you want to quote
step2:

(click on the mutli-quote buttons of those posts till they turn like that)
step3
click on ''Post Reply'' (make a NEW post) and voila the posts you selected are quoted there.
HunterICX