Fai così:
in un module metti:

codice:
Declare Function SetWindowPos& Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long)
mentre nell'evento form_activate:

codice:
Call SetWindowPos(Me.hwnd, -1, 0, 0, 0, 0, 3)
Prova!

Ciao
Andrea Gugu