I am in the middle of building a mame cabinet and I've run into a little snag with my controls. I have a trackball that plugs into a serial port that I've been using with no problems for awhile now. I just got a spinner that plugs into a PS\2 port. I didn't have a PS\2 port on my pc (it's old) so I added one since my motherboard had pins for expansion. So here's the problem, if I boot up with both of these connected, the spinner is recognized but the trackball isn't. If I boot up without the spinner connected, the trackball is recognized just fine. I can then plug in the spinner and they both work, but then my keyboard isn't recognized. I'm baffled, but then again I'm no genius at this stuff! My pc is an older 200MMX with 64MB of ram running Windows 98. I am hoping there is some different driver or something simple I can do to correct this problem.