I've always loaded real world weather in the FSX program and would like to know how exactly to load the weather through this program. I have it installed already but need help. I can't seem to find any information online. I do have FSUIPC paid version installed. 

Assuming that you are referring to FSRealWX Lite? First you have to put in the airport 4-letter code, e.g. KJFK in the Metar box, then top left press start. That's how I have it generating weather for me even though I already have REX, but because of drive space limitations have taken it off.

I'll give that a try...Thanks

Its not that hard, set option under general, startuo " tic download WX". and apply. Start FSX. when you spawn at teh airfield RWx wil update the weather from teh nearest station. ie the airport if that is teh nearest one. And dont forget5 to set teh update otion i have mine at 15 min, and dsiable weather in fsx.