The radio buttons are part of a from that may contain other data that will be transmitted to the next step in the process (these are my assumptions), so something like this would give the reults you need:
This will cause the Form Submit (by whatever method invoked) to direct the form contents to the appropriate action URL. Be sure they have selected one of the radio buttons. You may wish to have one preselected and the action directed to that one's URL. The URL should be either aa full http://.... path or the relative path .