To clarify, do you want to call different scripts depending on data submitted as part of the form? So if they give you data, call this script, if they give you data2, call this other script?

The 'action' in your form tag determines what will be called, but you can't dynamically change the action (well, maybe with Javascript). But you could create two forms with two different actions on the same page. You could also have both call a single script and have that script be smart enough to dispatch requests to one script or another on the server.