ok- if you have hardware devices, such as printer,scanner attached to the usb ports, you may well being prompted for the software for these items. If not install XP service Pack 2 , to see if this will provide the USB drivers. If this still fails then you need to know the make and model of your PC's motherbaord and then obtain chipset drivers, that will include USB drivers for your PC. Hope this helps.
pc, May 2005