Making the arrow keys work as the Tab key
If you want to make the Arrow keys work similar to the Tab key, you can use the Form_KeyDown procedure. Note: Remember to set Form.KeyPreview = True before you execute the code:

Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)

   Select Case KeyCode
      Case KEY_DOWN
         SendKeys "{tab}"
         KeyCode = 0
      Case KEY_UP
         SendKeys "+{tab}"
         KeyCode = 0
   End Select

End Sub