Save the downloadable package on an accessible location (such as your desktop). To install this package please do the following: Even though other OSes might be compatible as well, we do not recommend applying this release on platforms other than the ones specified. If it has been installed, updating (overwrite-installing) may fix problems, add new functions, or expand existing ones. This package contains the files needed for installing the Keyboard driver. Resolves the compatibility issue with motherboards using VIA chipset (PM800 Northbridge and VT8237 Southbridge combination).Resolves the software accessibility issue in Windows XP non-Administrator accounts. Improves the auto-chord accompaniment function in INTELLIGENT mode.