Logitech Mouse Software Downloads page has new version 8.32 drivers of the Logitech mouse drivers. These drivers work with any Logitech pointing device(s) operating under Windows 95/98, and Windows 3.1x. Under Windows NT 4.0, only PS/2 and Serial pointing devices are supported. Windows 98 is required for USB mice. Thanks SailorScout, who points out : "This release resolves some issues with Win98 and conflicting serial devices. In any case, the drivers seem 'smoother' and more stable."