- UltraMouse is Designed for Win-9x, Windows Me, Windows 2000 and Windows XP. - Please uninstall the old UltraMouse before install the new one. - Ultra-Wheel for wheel mouse only, Middle-Button-Menu can be used with 3-button and wheel mouse, all the other functions can be used with 2-button, 3-button and wheel mouse (usually the wheel can be pressed as the third button). - All functions are available in unregistered version. - Most Item-count is limited in unregistered version. - 30 days trial-period.
