How to Burn a Slideshow or Video to DVD Without a Menu (Mac)

Unable to import selected video clip to disc. A small window popped up with "You inserted a blank DVD. Choose an action from the popup menu or click ignore." Then below is 'Action ' with the choices Open Finder, Open iDVD, Open iTunes, Open other Application, Run Script. Just below that is a check box with 'Make this the default application, then below that is "Eject , Ignore and OK"' Now I don't know what to do. The instructions don't take account of this.