>Oh, I also tried the above without the Grid (binding to the Window.ActualHeight). That gave the required vertical scroll bar behaviour - but the horizontal scrollbar disappeared. Haven't figured out why that might be.....
>Best,
>Viv

That was why I stuffed the Grid in there Window.ActualHeight doesn't give you the size of the client area, it gives you the size of the window including it's borders. Stuffing the grid in there was a quick and dirty way to get the size of client area. Border might have been a better choice, I think it has less overhead.

One comment on that, not related to what we are talking about here, but that might help someone down the line. If you want a fixed sized window, don't set the size on the window, set SizeToContent="WidthAndHeight" on the window and set the height and width on the first child, a Vista window has a different border size than an XP window. So if you set the size on the window your client area will be different.