If you want to go to the next textbox using the returnkey try something like this. In this example I have 4 Textboxes, I all named them Input. Once you reached the last Textbox, he will go back to the first one.
Private Sub Input_KeyDown(Down As Integer, KeyCode As Integer, Shift As Integer)
Dim i As Integer
If KeyCode = vbKeyReturn Then
i = Down + 1
If i > 3 Then i = 0
Input(i).SetFocus
KeyCode = 0
End If
End Sub
Hope this will help you.
Fleer