I was surprised to see this when I checked to see if the driver for my I-river H320 player was compatible with windows XP: http://www.microsoft.com/windows/catalog/default.aspx?subID=22&xslt=search&qu=portalplayer&scope=2&btnSearch=Go .Or you can type in ``portalplayer`` in the search box on the microsoft.com/windows/catalog web sight and select manufactuer. Doc