Flying the "Mad Dog"

Hello folks,:)I have recently downloaded "Fly the Mad Dog," from Perfect Flight.It all seemed to install ok but there is a problem.After compiling the adventure (as per the manual) and starting a flight, I get no call outs etc. The aircraft flies very well.I tried re installing - which has made no difference and the problem still persists.Can anyone who has run this add on give me any enlightenment?I am running it on Windows XP (home edition)and FS 2002 I have e mailed PF's tech support but there is not a lot of helpful response.PC specs are.......Pentium 4 - 2.66 GHz processor - 512Mb Ram - ATI Radeon 9000 128MbThank you for any helpRegardsRoger