please asist, cannot seem to get menu maker to work in CS4 anybody have any ideas, have purchased menu maker and installed extention for dreamweaver but when i go back in to dreamweaver menu maker nowhere to be found under insert tab??? URGENT

I have menu's created for existing websites that are now not showing up in dreamweaver, they are still however on the websites that they where used on i just have no way off updating or changing them, does this mean i have to create all new menus for all my website from scratch!!! :-(