I recently formatted and upgraded a Pentium I Gateway Computer to Windows 98. I attached a serial mouse to it-but I keep getting this error message that tells me no mouse is dectected. I must either restart if I have a PS/2 mouse or I may safely attach a serial mouse then. The mouse is already attached at startup. I know the mouse works because I tried it on my Windows XP PC-it detected it with no problem. I don't have the disk with this mouse. Any ideas? :(