If you have your XP CD installation Disk, try to copy the file from the CD
to your SystemRoot by doing this:
Open a run command and type in:
cmd.exe click [Ok]
on the command prompt type in:
Expand X:\I386\mmdriver.in_ %Windir%\System32\mmdriver.inf
Warning: Substitute X where X is the drive letter for your CD-ROM ( for ex.
D\E\G)
Hit Enter and then type Exit.
If you don't have XP CD installation media CD try to Search your machine by
typing mmdriver.inf in the search engine and copy the found file in this
directory:
C::\Windows\System32