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>We will have two zipcodes and the road mileage distance between those two postal centers. I assume by "road mileage" you mean actual mileage if driven, and you're not missing the obvious option of computing the distance between the zips based on lat/long. Also, I doubt you know all the mileages between each zip (hence dist isn't required), but do you even know a high percentage? Why not only store records where you know the distance? Might make the file much smaller. -Walden ------------ Walden H Leverich III Tech Software (516) 627-3800 x3051 WaldenL@xxxxxxxxxxxxxxx http://www.TechSoftInc.com Quiquid latine dictum sit altum viditur. (Whatever is said in Latin seems profound.)
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