Changing text that displays on comment page?

Author Message Bob Posted: 12/1/2009 Quote message  1.) How can I change the text that displays on the comment page from "Leave a Reply" to something else, maybe "Discuss this post" 2.) How can I change the text on the submit button from "Submit Comment" to something else, maybe "Discuss." Thanks in advance!!!   Garry Posted: 12/1/2009 Quote message  You can change that from your comments.php file