Setting Flex builder 3 to debug your swf with Flash CS4 and Flash CS3 installed

When you want to debug your application using Flex Builder 3
and if you have Flash CS4 installed as well as an older version of FLash CS3
you will see a dialog saying that C:\Program Files\Adobe\Adobe Flash CS4\Players\FlashPlayer.exe is not the version suitable to debug your SWF.
To fix this issue exit Flex Builder, backup your C:\Program Files\Adobe\Adobe Flash CS4\Players\FlashPlayer.exe and C:\Program Files\Adobe\Adobe Flash CS4\Players\Flash Player.app folder then copy C:\Program Files\Adobe\Adobe Flash CS4\Players\Debug to C:\Program Files\Adobe\Adobe Flash CS4\Players\.

Flex Builder 3 didn't map the right path to Debug\FlashPlayer.exe