Yeah ehm I've done that already, these are the (Non-default) property's:

AlwaysOnTop = .T.
Borderstyle = 0 - No border
Caption = (None)
ControlBox = .F.
Desktop = .T.
MaxButton = .F.
MinButton = .F.
MinHeight = 2
MinWidth = 2
Movable = .F.
ShowWindow = 2 - As Top-Level Form
TitleBar = 0 - Off

Now how can I be sure my form really stay's on top?