Selenium2: Firefox Profile preferrence setting

The preference setting file for Firefox browser is:

C:\Users\<User>\AppData\Roaming\Mozilla\Firefox\Profiles\xxx.default\prefs.js

 So please backup this file if you want to change anything.

FirefoxProfile profile = new FirefoxProfile();  
//Setting the download dir
profile.setPreference("browser.download.dir", "E:\\builds");  
profile.setPreference("browser.download.manager.showWhenStarting", false);  
// disable the popup save dialog 
profile.setPreference("browser.helperApps.neverAsk.saveToDisk", "application/zip");