Now that I am off the phone, longer answer -- Yes, I imported into the shipping rate header and shipping rate detail files. We used ""zones"" which were using the ""prior range of zip code"". This was years ago, but we had to download Excel files from the UPS site, then set up an Access database to link the zones list with the rates list. There were LOTS of records. But, it imported and worked quickly to calculate rates. Client eventually went away from that in favor of flat-rate shipping as it was easier for sales reps and customers to understand.