I have a very annoying problem that lasts for almost a year.

Windows do not find processing 2.0 as a defauft program for .pde file.

Even when I  try to use open with command (right click mouse button ---> open with ---> browse processing2.0). When I browse the processing2.0.exe file, it does not appear in open with window at all.

I added the picture below.

The only way I open processing sketches is when I press processing.exe file, the file open processing sketch....

AAA... PLEASE HELP ME.