On Got Focus - Hover Over Text Box And Display Text In Another Textbox

When I mouse over TEXTBOX1 I want it to display the phrase Hello World in TEXTBOX2.

When the Mouse moves away from TEXTBOX1 I want TEXTBOX2 to go back to normal.. (Empty)

How can I get the below VB to work? Or something similar.. I'm assuming a mouse move event or something

Code:
Private Sub TEXTBOX1_GotFocus()
​ Display Hello World in TEXTBOX2
End Sub

Code:
Private Sub TEXTBOX1_LostFocus()
Clear TEXTBOX2
End Sub