Where do I see what firefoxdriver selenium starts while testing?

I have installed firebug for FF. But when i start firefox it always starts some default ff version, i dont' know where selenium finds it.

I already googled alot, tried to use different firefoxbinary:

System.setProperty("webdriver.firefox.bin", "C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe");

  final File firefoxPath = new File(System.getProperty("webdriver.firefox.bin")) ;
  FirefoxBinary firefoxBinary=  new FirefoxBinary(firefoxPath);
  firefox = new FirefoxDriver(firefoxBinary,null);

I tried to use different ff profile:

FirefoxProfile firefoxProfile = new FirefoxProfile();
   firefoxProfile.addExtension(file);
   firefoxProfile.setPreference("extensions.firebug.currentVersion", "1.9.1");

Alas, it does not work! 1. I don't know where to change/find webdriver.firefox.bin 2. I have tried changing path as environment variable,still no progress maybe I m doing something wrong?