you can get it from here http://www.microsoft.com/downloads/details.aspx?FamilyID=9de6260e-4275-482d-9524-de850c4dd91c&DisplayLang=en
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The Office service pack is not a beta; it is a complete release., and Today's XP service pack download is a release candidate -- past the beta stage, but not yet ready to be declared a formal release for production systems. Windows XP SP3 Release Candidate
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