Is this book for Windows users, Mac users, or both?

It's really just for Windows users, because at this point in time, there is no version of Elements 4.0 for Mac. Now, I say "at this point in time" because apparently that's subject to change, because a day after Adobe announced Elements 4.0 was for Windows only, then they kind of quietly said that a Mac version may be coming (it was more like a "probably, almost certainly, maybe one day, but we don't know when, but probably soon"). So I called them, and said something along the lines of: "Hey, I wrote this book based on the fact that you told me there was going to be no Macintosh version." They said something like, "Yeah, well, we're thinking now there probably will be," so I started banging my head against the wall (in joy) because my book, for the Windows-only version, was complete and ready to go to press. However, they let me know, in no uncertain terms, that the Mac version wasn't going to be ready for "a while," so that's the scoop. I have no idea if the Mac version will have the Organizer (the last Mac version didn't) or all the same features the Windows version does (the last Mac version didn't either), and I'm not certain Adobe knows which features it will have yet (maybe they do, but my head hurt so much from all the banging that I was hesitant to call them again). So, this book is for the only version available when this book was written and publishedthe Windows version.