I have a machine using Win98 SE. I've placed the USB 2.0 card into an open 32-bit PCI slot. I've disconnected my old serial ports. I've then followed the instructions for the CD-Rom with the Comp USA 2-Port USB driver. Each time my computer begins to load the driver, I get an error message saying, "This program has performed an illegal function." And that's as far as I get.