Windows Server Enterprise 2003-64BIT Edition with 25CLT CD
By Microsoft

Windows Server 2003 Enterprise Edition is a productive infrastructure for running all business applications and services including networking, messaging, inventory and customer service, database, e-commerce Web sites, and file and print servers. ... 

Windows XP Pro X64 Edition SP2C English 3-pack DSP 3 Oei ES, FR, IT Mui CD
By Microsoft

If you're looking for large amounts of memory and improved floating-point performance for tasks that rely on real-number data, such as mechanical design and analysis, three-dimensional (3-D) animation, video editing and composition, and scientific and high-performance computing, Windows XP Professional x64 Edition is designed for you. ... 

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Windows XP Professional SP3 EN1PK CD
By Microsoft

Windows XP Professional complete with Service Pack 3 delivers everything you demand from your computing experience. Whether you're on your own or running a business of any size, optimize your productivity with the digital world's latest innovations. ...