Several weeks ago I downloaded the FS2K2 Ford 5-AT Tri-motor but forgot to unzip sound files before I flew the bird.  The FS2K2 Pro sounds (engine, starters, and the like all sounding at once) were royally screwed for about a week, then everything returned to normal.  Last week, I tried to upgrade from a 30 gig harddrive (c) to an 80 gig Drive C.  Nothing worked, and I replaced the original 30 gig Drive C.  Sadly, the sound is botched again.  I'm running a 2 MHz Pentium w/memory maxed out and Windows XP Home and this is the first time I've had this type of trouble, and 2K2 has aircraft and add-ons which would be a headache to re-install if I have to re-install them.  Is there anything I can do to avoid re-installing the entire FS2K2 Pro?  Thanks in advance.