Where is ACDSee Categories saved?

The categories are quite useful, but there's no point spending time assigning 9000+ photos if all is lost next time I reinstall my operating system. How can I get to the database file and make a backup? For some reason I can't get a straight answer from the ACD so-called intelligent cyber-online-faq-agent or watchumacallid.
I'm using ACDSee Powerpack 5
I'm using ACDSee Powerpack 5