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Windows XP Comparison Guide
"Windows XP Professional gives you all the benefits of Windows XP Home
Edition, plus additional remote access, security, performance, manageability
and multi-lingual features that make it the operating system of choice for
businesses of all sizes and people who demand the most out of their
computing experience." http://www.microsoft.com/windowsxp/pro/howtobuy/choosing2.asp
They are basically the same. Pro has some network and security features that
Home doesn't, but for the vast majority of users Home is fine. Why spend the
extra money if you don't need to.
