DOCBOOK-APPS: roman and arabic page numbers

I have been reading the archives about using
roman page numbers starting with the TOC and
using arabic page numbers starting with the
first chapter, but I still can't figure out
how to get this to show up in my PS and PDF
outputs.

I have 

(define ($page-number-format$ #!optional (gi (gi)))
  (cond
   ((equal? (normalize gi) (normalize "toc")) "i")
   ((equal? (normalize gi) (normalize "lot")) "i")
   ((equal? (normalize gi) (normalize "preface")) "i")
   (else "1")))

in my DSSSL stylesheet. What else do I need?

Thanks,
Tammy