Make form modal.

>New terrain for me here. I just created a form using form designer called One.scx. my intention is to allow only one change to a database - then operator must exit. The form is working perfectly when i call it up from command windowas follows:
>
>do form one.scx
>
>Problem now is that when i call this command up within a program *do form one.scx" the form appears, but is not active - the program continues after bringing up the form and the form and screen remain visible.
>
>How do i activate the form and how do i close the form in a program?
>
>tnx
>k