ok, so the TdateTimePicker needs comctl32.dll > v4.7. My question is today we tries to copy it to a test machine after a reboot. Comctl32.dll was running on the machine after the reboot and so it wasn't strightforward to copy it. We were planning on using Install Shield express for indtallation - however I can't imagine it being able to deal with this? I'm not sure how likely comctl32.dll is to be running on a user machine prior to installation, But it obivously is an eventuality that must be prepared for. Any comments are welcomed. Tom.