there is a free utility for windows, "pdf version converter" that converts to "1.x" (maybe x=0):http://www.nicepdf.com/products.html

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That's a great find, nlp. Although it won't convert to 1.0, it still allows the reading of many newer Acrobat docs on older Macs that might only be able to handle versions up to, say, 3.x. And that's very helpful.

Thanks!