Help needed installing AspectJ in NetBeans (on a Mac, of course)

I'm having trouble installing AspectJ for use with Netbeans. I've downloaded the AspectJ module and extension for NetBeans (from http://aspectj-netbeans.sourceforge.net/), which being Java-based I assume are platform independent, but the installation instructions don't describe how to install on a Mac. I don't know where to find the modules/ directory or the lib/bin/ directory for NetBeans. Thanks for any info.