Posted July 28, 200816 yr You can upgrade from 32 bit vista to 64 bit Vista free you just pay about $10 for them to send you the disc at this link: 'www.microsoft.com/windows/windows-vista/compare-editions/64-bit.aspx' (http://www.microsoft.com/windows/windows-vista/compare-editions/64-bit.aspx) I do not think you can upgrade from 32 bit xp to 64 bit vista SIW2 -- SIW2
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