ok, well, how do you want to change it. There are a couple of ways to do it. You can do it with pictures, and you can just move the entire menu. Where are you thinking of moving it to? This does involve scripting however, but this is like the basics of it, so I can help here.
If you just want to move the position, you need to go into scene Title and change,
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  @command_window = Window_Command.new(192, [s1, s2, s3])
  @command_window.back_opacity = 160
  @command_window.x = 320 - @command_window.width / 2
  @command_window.y = 288
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See where it says @command_window.x? you would change the 320 to move the window left or right. and where it has .y would change the 288 to move it up and down.
Hope this helps!!
~xgamexfreakx