Thanks for the idea. It's close, but not quite. Currently using a constant of 316 twips for record selector width (1280 x 1024 screen resolution). If I open a test screen, WindowWidth=3945, FormWidth=3240, ScrollbarWidth=240, and BorderWidths=120 (2 x 60). So that would calculate out to 345, which is just a few too wide. I think I give up, maybe keep using constant, or maybe a variable the user can adjust if they use different Windows Appearance settings than I do. Thanks.