I'm trying to generate a map of territories based on zip codes. I purchased a 2007 zip code dataset and entered the territory classification for each. When I linked the spreadsheet to MapPoint it came up with a large number of unmatchable entries. Should I use the zip code list built in to MapPoint to designate my territories? If so, how do I get access to that dataset? In the USADemo.mdb?

To get the zips from MapPoint:
1) Data Mapping Wizard
2) Shaded Area Map (next)
3) Add Demographics (next)
4) Area Sq Mi - Divide By {None} - Zipcode (next)
5) Finish, zoom out to 25,000 mi, draw rect around NA
6) Export to Excel