The best place to find out about how to adjust items in the menu.ini file is zAmboni's excellent tutorial
here
The last two numbers in the Zone line will move the item a specified number of pixels, but where it ends up on the screen depends on the resolution that the user's game is set at. That's the easiest way to move things around, but it's also the least flexible.
zAmboni's tutorial explains what the other numbers in those menu.ini lines mean and what it takes to move things and resize them.