How do I prevent the msg screen that a 3rd party software is installed from popping up.Regard

If this post is about the FSSound.dll error in your other post, get a newer FSSound.dll as you were advised to.If you follow the directions in the pop up and check the FS2002 Readme.rtf you will find this.-------------------------------------"Imported and Third Party SoftwareThird party DLLsIf you are using imported aircraft or software add-ons that have not yet been tested by the author of the add-on for compatibility with Flight Simulator 2002, you may get an error message asking whether or not you would like to load a third party add-on.If you click the Yes button, Flight Simulator loads the listed add-on. Clicking No turns it off, but only for a single session of Flight Simulator. If you select not to load the add-on, other components of the add-on (such as gauges) will no longer work. There are two ways to avoid seeing this error message every time you start a new session.The best way to solve this is to contact the developer of the add-on (not Microsoft). The developer should post a revised DLL that will not cause this message to appear. This will also assure you that the developer has tested his add-on with Flight Simulator 2002.If a revised DLL is not available from the add-on

I rephrased the question in order to make clear that it is about 3rd party software in general, we know that this msg appears in FS2002 if we do not make the correct configuration, I have just forgotten how to, therefore the question. Thank you for the directions u posted.Regard