This is just a simple report.I would like to thank you for answering all my topics. As simple as those questions might seem to be, they still helped me a lot to understand what is going on. Now I can clearly see the weather changing as ASA takes over FSX engine.Nonetheless I should still report that only by running FSX before loading ASA could I experiment all changes applied. This is not bad at all in my particular case, considering the way I use to start FSX (see above). I suspect that this may be a problem related to Vista.So, if I start ASA before FSX I compute changes in wind, pressure, visibility, temperature and dew point BUT NOT in cloud coverage and rain. Also starting FSX before ASA speeds the process of loading weather into FSX (ie less than the expected 5 minutes).I've seen other posts in this subject at hifisim forum that came to the same conclusion.I did most of my tests around Brasilia airport SBBR using ASA "WxConfig" option and its "ApplyWeather" button.