Not sure about your OS, im using a linux based.
all my settings are in a file "springsettings.cfg", found in my .spring folder.
the contents of the .cfg file should contain all the settings.
any simple text editing program should work. i use gedit, though for windows probably notepad should work...
It is a good plan to make a backup of any files you wish to test.
And when you get the settings just the way you like them, its good to back up that "springsettings.cfg" file as a spare incase the active one gets corrupted or overwritten by any overzealous lobby.