WinDV bigger screen


I have a 7" WinBook TW700 with with a ThumbDV plugged in.
And using WinDV for the app. Is there a way to increase the size
of the window of WinDV? It only takes up about 1/2 of the tablet screen. And no way to use the normal re-size methods of Windows. When I try to add a reflector using a stylus it's almost impossible. WinDV works OK with a real mouse, or a 15" laptop, but not with a touch pad of the 7" WinBook.