Resizing Plug-in Windows

Is it possible to make a plug-in window resizeable, or to add scroll bars too the window? 

I have created a plug-in which uses AFXDataDialog.__init__() to create the dialogue box, and it works fine on my computer, however when using on a colleagues computer with a smaller screen, the dialogue box is taller than the screen, so the bottom of the dialogue box, including the ok / apply buttons fall off the bottom of the screen. 

Thus I was hoping it is possible to make the window resizable or to add scroll bars for cases when then dialogue box is larger than the screen

Thanks

Richard