I was wondering if anyone runs SolidWorks in Windows XP 64,

I currently using XP 32 Professional but since the designdepartment decided to upgrade softwares I wasn't quite sure aboutswitching to Vista or XP 64 ,

Although I was looking into some online sources they allrecommended XP 64 for design softwares but I couldn't find any herein Toronto, Canada

Does any one knows how I could find XP64, is it recommended to getthat or Vista?
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