on the FCP install disk, i think in an "Extras" folder,
there is a collection of Countdowns,
and indeed an FCP project file with the Countdown Template sequences ready for you to modify.
it could be labelled "Countdowns for Cinema Tools" or similar.
these countdowns ar WAY better than the one FCP generates.
other than these, you need to make your own, or acquire them from somewhere else.
nick