Moodle in English

Hi, one more question if I may, please. In the advanced settings of a questionnaire, I have entered heading text and body text under submission options, so that students receive a message after submitting the questionnaire. That message is followed by a "Continue" link that allows students to see their responses. It would be much handier for my course if the "Continue" link redirected students back to the course homepage rather than to their responses. Is there a way to do that? Since my site already contains many changes to core code, I'm willing to modify a php file if someone can suggest the file I need to change and what I need to change in it. Many thanks.