>I have three forms Namely 1.pec_disp.scx 2. bcet_disp.scx 3. cet_disp.scx in Visual FoxPro Projects folder. I want run these forms automatically one by one every 10 seconds repeatedly.

Have a hidden object with a timer. Instantiate each form and have a reference to them in an array property of this hidden object. Then when the timer fires, hide the current form, show the next. If the next is a 4th (that you don't have), show the 1st.