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Just got a Toshiba Laptop with Windows XP Home edition on it. I would like to upgrade the OS to Windows XP Professional Upgrade CD (in order to keep all my current settings) Please kindly give me a quick tutorial and let me know what steps I have to thorugh, in order to install the Windows XP Professional Upgrade on the top of my current OS, without re-install all the apps and keep all my settings. Please kindly advise what should I do ? Thank you so much for your help in advance.