This software works on all Macs currently sold by Apple. Unfortunately Apple is threatening to release Macs that will not run anything below 10.3. That and the huge Apple price premium should be enough to discourage the few remaining Mac loyalists into jumping ship.
Mac OS 9.1 will automatically download software updates over the Internet, and even install them for you. You can also send files across the Internet with industrial-strength encryption. Apple's easy-to-use file sharing now works the same way over the Internet, so you can share files, folders, and data with anyone. And now AppleScript over TCP/IP lets you remotely control your Mac (or a whole battery of Macs) from wherever you happen to be. The network browser feature lets you find Internet file servers, FTP servers, and Web servers almost as easily as you find printers on your network.