All you need to do is add a USB 2.0 PCI card.
Windows SP1a will supply the drivers.
My computer has a motherboard in it identified by Dell after about 2 weeks as a board number 1T751. This board supports a pent 4 proc and the 850 family of chipsets. Also Dells A09 bios version. I'm trying to get an Intel number to check the specs on this board to see if it'll support an upgrad from usb 1.1 to 2.0. Any Ideas?