Need some advice from Solspacers out there…

I’ve got a FF form on an events page to be used for capturing event registrations. When the data is submitted, it is returned to a confirmation page that spits back the entered data using the return=“group/template/%%entry_id%%” template specified in the form. This works great; the user is redirected to a page that has a URL of “http://www.mysite.com/events/success/XX”  (where xx is the FreeForm entry_id).

What I need is to keep the same functionality but have the URL be a fixed file - such as http://www.mysite.com/events/store.php. The reason for this is that my client has a Credit Card payments setup with LinkPoint (now FirstData) and their web payments system requires that all “orders” are must originate from a specified URL for security purposes.

So, i’ve enabled the option to “Save Templates as Files” and I can now connect to the LinkPoint payment gateway, except none of the data from FreeForm is being sent because I lose the entry_id due to the URL issue.

Does that make any sense at all? I’m probably having a brain fart here, but my thought was to have a simple dropdown box that the user would then be able to select the event they wish to pay for and then have the page refreshed and populated with the data accordingly ... but not sure where to start.

Ideas? thoughts? thanks in advance!!!