Ok, I tried other drivers, none worked quite right, so I dug out my old floppies and got the REAL ORIGINAL driver diskette for the kensiko dual scroll mouse with the 3rd button for zoom/scroll. I put the original diskette all in a zip (subdirectories and all) for everyone. Please note, this also works for the IDENTICAL A-4TECH dual scroll mouse!!!! They are the same thing. This disk has the DOS/Win 3.x and the win9x drivers!!! Good luck and enjoy!