We've had the same problem here and my solution was to buy a "canadian postal code" database. This database featured ALL canadian postal (not just the forward sortation area) and also their Longitude/Latitude (there are over 800'000 records in this database!). The database is in access format.
What you *could* do is run a query of your territories table along with the postal code table and extract the longitude/latitude of the postal codes per territories. You could then import each territory's postal codes separately and draw a polygon around it?
If you're interested obtaining this database here's the link:
http://www.zipcodedownload.com/Produ...dard/Overview/
Hope this helps
Sonicman