You can use bootcamp to install windows on a Intel Mac, and you can install a intel version of Linux also, there's no problem. There's also a MacOsX 10.3.9 build for Intel chips circulation on internet, I think it is not a legal release, so I wouldn't download it or even install it, but I've read that it is working ok in some forums (as a prove it can both OS can share a single computer).
Linux has been proven to be a good companion of MacOs and Windows, so intalling all of them, theorically, shouldn't be a problem.
Linux has been proven to be a good companion of MacOs and Windows, so intalling all of them, theorically, shouldn't be a problem.