hi I'm looking in to finding out how this could work with Logic's Space Designer. Haven't been using max for a long time so i don't quit understand how you would use the VST~ and let the object know where to look and wish to understand how i can get an easy way to get an impulse response unit in to a patch as well as a piano.
This reply is for posterity, it has been 5 years after all ;-)
Instruments and effects that come with Logic Pro are not separate AU/VST plugins and so aren't accessible to applications outside of Logic. Unfortunately, Max won't be able to use Space Designer, you'd have to find a third-party plugin to achieve the same end.