XP
Windows XP is supposed to make computing simpler and more fun. If you're upgrading from Windows 98 or Me, it should be more reliable--and less crash-prone.Why?First, the core of the operating system is built on Windows NT/2000 technology, which has proven to be more robust and more stable than Windows 95, 98, or Me.
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Linux
Linux: Linux is a true 32-bit operating system that runs on a variety of different platforms, including Intel, Sparc, Alpha, and Power-PC (on some of these platforms, such as Alpha, Linux is actually 64-bit). There are other ports available as well, but I do not have any experience with them.