You need to reinstall the driver, which in most cases is the same one for
the keyboard and mouse. Or you can install the two separate drivers for the
keyboard & mouse described bellow. If for any reason you don't like the
change, you can always go back to the previous driver on both devices which
most likely will be reinstalled correctly.
To uninstall the driver from the Device Manager: Right click My
Computer\Manage\Device Manager\ look for the keyboard and mouse and right
click on each one, and select uninstall and restart the computer; You won't
loose the use of either device cause it will not be uninstalled till you
restart and then they will reinstall, this time correctly if the driver is
not corrupted, if it should be corrupted, you can install the following
drivers.
IntelliType Pro 5.2 Keyboard Software for Windows XP and 2000
IntelliType Pro software enables you to customize the unique features of
your Microsoft® keyboard. You can reassign keys to open a program, file, or
Web page, or to perform commands and application-specific functions. You can
also disable keys and modify scrolling and zoom slider performance.
8/17/2004 #692
IntelliPoint 5.2 Mouse Software for Windows XP and 2000
IntelliPoint software enables you to customize the unique features of your
Microsoft® mouse. You can reassign mouse buttons to perform commands,
shortcuts, and application-specific functions. You can also modify mouse
settings, such as pointer speed and updated horizontal scrolling. 8/18/2005
#729
http://www.microsoft.com/downloads/Browse.aspx?displaylang=en&categoryid=3