Esta opción hace que el form tiemble durante 5 segundos. Se necesitan dos timers.
Dim cuenta As Integer
Dim re As Boolean
Private Declare Function FlashWindow Lib "user32" (ByVal hwnd As Long, ByVal bInvert As Long) As Long
Timer1
If cuenta = 5 Then
cuenta = 0
Timer1.Enabled = False
Timer2.Enabled = False
Else
FlashWindow Form1.hwnd, 1
cuenta = cuenta + 1
End If
Timer2
If re = False Then
Form1.Top = Form1.Top + 100
Form1.Left = Form1.Left + 100
re = True
Else
Form1.Top = Form1.Top - 100
Form1.Left = Form1.Left - 100
re = False
End If
Llamada
Timer1.Interval = 1000
Timer1.Enabled = True
Timer2.Interval = 50
Timer2.Enabled = True
re = False
Fuente (http://artehack.net/)
Un saludo