I would like to report SUCCESS in getting my USB keyboard/mouse to work with SP 3.5. For the record, I don't have any other USB devices on this system-just the USB keyboard/mouse & that's it. I have tried NUMEROUS other things in the past but what got me on the right track was Problemchyld's link called Solution 1 that was an article by USBman called Safe Mode Cleanup of the Device Manager. That information combined with my past experience got it working. I followed USBman's directions & then after the restart back to normal mode, before I plugged in the USB keyboard I moved the SP3.cab file out of the C:|Windows\System\Precopy folder & dropped it on the desktop. Of course through all of this I had a PS/2 keyboard & mouse plugged in until I got the keyboard working & subsequently the mouse also. With the plugging in of the USB keyboard & the start of the Add New Hardware Wizard I had to tell it manually where to get the driver files. The only place I could find the 1st file it needed was in the SP3.cab file. This file was USBccgp.sys. I copied this file out of the SP3.cab & dropped it into a folder I had created named C:\Windows\Options. I had my original CAB files from the 98SE install CD in a folder just under Options named Cabs so for all the rest of the files that were needed for the wizard I pointed it to this location. I believe the only other files needed were HIDclass.sys, HIDparse.sys & HIDusb.sys. Even though it complained that I was replacing newer files I told it to use the ones in the Cabs folder from the original 98SE install CD. Just to make sure it would still work after a restart I restarted the computer, unplugging the PS/2 keyboard before it went through the POST. THE USB KEYBOARD NOW WORKS!!! I followed the same procedure for the mouse & got it to work also. I know this is just a workaround so I am anticipating when you have it all figured out Problemchyld. I hope this helps you in some small way to get these kinks out. Thank you so much for your untiring efforts in this area. I work for a Christian radio station that has limited finances but uses audio cards that only work in ISA slots (Dont't laugh, they work great even though they are ancient) & on top of that their software only runs on 98 so the resources you provide are invaluable. When I had to reload a computer recently I found Windows updates no longer available so after a little research I was very thankful to find your service especially since it was so easy to implement. BTW, I would assume you have pulled the download of SP3.7 down until you get this USB problem figured out. Is that right?