Sure PC's can read sti files. With Stuffit. But IMO it's the worst archiver I've ever met. It was very possessive, claimed all sots of files as it's own and was almost impossible to uninstall. As I understand it, MAC's can extract zip files, and since almost everybody has Winzip (or some other zip product) I think it's a bad idea to archive PC files in something meant for a Mac. Personally I prefer Ace, as they compress far better than zip, but I do not distribute my files as .ace files since not everybody HAS WinAce, nor may want to install it. Keep it in zip, PLEASE :o)

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.