>Is this something I can check at the NT level? There is no readonly property on the properties sheet for a form, I noticed.
You can add the column "Attributes" in the Windows Explorer. This is different in different Windows versions; check what options you get with "View | Options".
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)