I wouldn't say that Mac OS X is a make or break product for Apple, but it's close. But it can move Apple into spaces where it's not been, or been strong, before. At MYOB, we look at our job as being translators: translating the language of business into the language of accounting. We need to use tools given to us by the authors of operating systems. The Mac side and OS X gives us a tool set that lets us do our jobs as translators better than any other tool set on the planet. It's up to us to use those tools to move up to the next level.