The only sound problem I know of for the 737, is the Fasten Seatbelts and No Smoking signs a very quite (almost impossible to hear). I have never had any problems, other than that, with the sound.

Make sure that you install the 737's using the Run as administrator options (right click on the install and select Run as administrator from the list) if your OS is Vista/Win7/Win8. If you didn't do that, then it is highly likely that the installer never added the following:

 <Launch.Addon>
           <Name>Captain Sim 737 Sound</Name>
           <Disabled>False</Disabled>
           <Path>Captain_Sim\737\cs.sound.dll</Path>
 </Launch.Addon>

to the DLL.xml file. Copy and paste this: %AppData%\Microsoft\FSX\dll.xml into the Run Command (Windows Key + R) and see if it has been added.


Quote:

I would also like to know why after having invested in purchasing software from your company why I cannot post my issue in the relevant section of your forums.

It's an anti spam measure, and the FOR NEWCOMERS - ask your questions here topics are where you ask your questions. At sometime, hopefully, they will be move to a topic that matches the problem.