Availability of Zipcode listing to upload to Informix DBS

Does anyone on this group know where I can obtain a comprehensive zipcode listing that can be uploaded into an Informix database? Commercial is ok. Awhile back I got several adds about such listings but did not need them at that time. Now.... Some of the ones I have seen are PC based with their own front-ends. I need to incorporate zipcode lookup into our application. Any leads would be appreciated. -- --------------------------------------------------------------------- Harold L. Trammel | "Do everything without National Animal Poison Control Center | grumbling or complaining" College of Veterinary Medicine | --- Phil 2:14 --- Univ. of Illinois Urbana-Champaign | htrammel@uiuc.edu _or_ hlt@napcc-hp.cvm.uiuc.edu =====================================================================