yellow question"s in device mngr.

when I try to install this file and sm bus controller window's xp will say
THE FILE ( khalmnpr.exe) on set point driver disk is needed. here's the
confusing part say's type the path where the file is located, and click o.k.
does this with other files also. brother mfc and sm bus controller, won't let
all my key's work on my logitech keyboard?? what does this thing want me to
do???? do I browse or what click ok and nothing happen's either, can anyone
please help?