I had to follow your last link above. However the commands did not work on the "expand" step until I checked for the file using this dos command: dir *.ex_/p and thus noticed all the file names were in caps. Once I put the dos command in all capitals it worked perfectly.
This is what I typed in the cd\dvd drive. In the line below, d:\ is the computers prompt.
d:\EXPAND SNDVOL32.EX_ C:\WINDOWS\SYSTEM32\SNDVOL32.EXE
Now to re-hide my hidden files.. kids use my computer too