Help with code

[SamT]

Tip: Put Marks 3 controls in a Frame and size everything to look like one textbox with a colon in it.
Trick: Gently encourage Users to use 2 digit hours with

Private Sub tbxHoursChange()
' Other checks here
If Len(tbxHours.Value) = 2 Then txbMinutes.SetFoucus
End Sub