XP has no problem with it but you need the SATA connection to the board & also the SATA power connector.  You can buy add-in cards that will give you this ability.  Here are a couple to get you started- though I'm sure there are many vendors to choose from:

http://www.acortech.com/.sc/ms/dd/1093618968810390/9/nc/Controller%20Cards/1072/Silicon%20Image%202%20Port%20Serial%20ATA150%20Raid%20%26%20Controller%20Card

and the power here:

http://www.directron.com/directron/idesatapower.html

Lynn

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