Take a look here, it may help:
http://www.slipstick.com/outlook/sync.htm

Signature
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Milly Staples [MVP - Outlook]
Post all replies to the group to keep the discussion intact. Due to
the (insert latest virus name here) virus, all mail sent to my personal
account will be deleted without reading.
After furious head scratching, Alejandria asked:
| I'm running 2003, and i was wondering if there was a way to
| sync up two calendars. I would like to put my
| deadlines/special events on one calendar and every day
| schedule on another and be able to make appointments that
| check both calendars to make sure i'm available. Is that
| possible?