need to create a manipulable list

hi all-

we want to create a list of simple line items that all sit inside a frame, and the user would be able to grab one of the list items, drag it up or down, have it pop into place where is dropped.

gui buttons are actually just the right shape and feel, essentially this could be a vertical stack of draggable buttons perhaps? and perhaps they would just shuffle to accomodate the user's input based on an auto layout?

thanks