Model:
Category: Keyboard / Mouse Driver
Operating System: Windows XP (Note: might work with other versions of this os.)
File: Standard_101_102-Key_or_Microsoft_Natural_PS_2_Keyboard_v5.1.2600.2180.zip
Comments:
It can be used for troubleshooting if there should be any problems with your current driver. Does not require XP-SP2 to be installed. Can also be used with notebook keyboards as far as i know.
Might work on Windows 2000 (not tested)