You can pretty much do anything you can do with an EXE except display any UI. This includes WAIT WINDOW, MESSAGEBOX, Forms, Printing, etc.

Any UI will have to come from an EXE.

>Craig:
>
>Thank you for your reply. If there no UI allowed, I can use a form to display a PDF file using and commercial OCX? Can you explain me or give me a link that I can read to see what I can do and I can't do with the DLL.