Need to Have further Confirmation While Confirming the Order in Oracle sales order Form

 Hi All,

I have requirement for the sales order form,  where in i have to display the custom alert or message to the user when he click's on the Confirm the order button  after booking the order.

In that alert or message i have display the options to the user like "Do you want to Confirm the Order ? "  with options yes or No if user  selects yes option  then form should allow him to book the order if he choose no then i have to disable the confirm order button.

Client wants us to achieve this functionality with out any customization to the standard form. So it has to be done either through the form personalization or by the custom.pll .