Airspace coordinates for moving map

Hi

I wonder if the group can help with an airspace database question. I would
like to convert the local (published) airspace boundaries for New Zealand to
ARINC 424 format for my use in a Pocket PC application. (This is the format
used in many of the commercial gps units for their regular DB updates.)

2 problems, I dont want to fork out for a great big "official" manual from
ARINC to find out how the format looks and second, my programming skills are
a bit rusty.

Does anyone know of a way of converting data or alternatively a source of
the data in ARINC 424 which is not for commercial use?

Cheers
Alan