I need some VB to do the following please (My VB is not good enough yet)

Starting from the active cell (call it the StartCell)
In the cell to the left..
ThreeChars = Value.right(3) (the last three chars)
Value = Value - last three characters (assume value is text & at least 3
chars present)
In StartCell..
value = ThreeChars (as text, overwrite any contents of StartCell)
move active cell one down from StartCell