>DO FORM "form" && opens form.
>
>THISFORM.Release && closes form

The above will work, but you must also address the issue of whether the form is modal (waits until you close it from the keyboard or the with the mouse), or modeless (fires up and remains active, but returns to the line following 'do form'.

It wouldn't hurt to read the programmer's guide about creating and invoking forms. Read about the commands READ EVENTS and CLEAR, understand the distinction between modal and modeless forms and understand how the form runs within the environment (does it run on the VFP screen, in the desktop, in the current form, as the top level form?)