fs2002 sounds

hi everyone HELP!i have fs2002 installed and have a problem with the sound files put simply .... my sound files are either missing or disabled.i hate to sound like a total gimp but atc, engine sounds , prop sounds... basically everything is not operating.the only thing i have available is the cessna wheels rolling sounds and this stops as soon as my wheels are off the ground.... then silence ..... i have tried re-installing fs2002 twice but the sound files seem to be corrupted or disabled in some way and as im not a computer whizz i was hoping somebody out there in the fs community could give me a fool proof solution.come on guys help me out regards slickstick