I have an IPAQ4 CP running PS/2, works great. I have a USB keyboard. Problem is I cannot get both to work simotaneously. If I reboot my PC with both plugged in the USB keyboard takes over and the CP doesn't work. If I plug in my CP first boot up then plug in my USB keyboard the keyboard will either take over the CP once again or not work and the CP will continue.. So how do you get them to both work at once?