So you can't handle a 5.5 meg download? And you have lots of RAM? Here's a patcher, made by UpdateMaker, that turns your standard Shapes file into the Levitus Shapes file, described above. It's less than 300k... but the bad news is, it requires almost 20 megs of RAM. (Virtual memory should count...) I'm still looking for a patcher that can handle dataforks, and doesn't require that both the old and new files be read into RAM before the patch can take place...