I have installed an Iomega zip drive that insists on taking over the "D" drive letter designation usually used on the cd-rom. I have tried to re-install but every time, it puts the D drive on itself (zip drive) and deligates the "E" drive to the ROM. I know there is a place in the regiisrty that designates drive letters. i have tried to use the control panel to desigate letters but they are "greyed out". Please help! Iomegas web site offered no solutions.