So that’s very straightforward according to my previous post. Invoke the Find Dialog box (Search menu, choose Find…). With your editing cursor at the top of your file, activate the Replace tab in the Find dialog box. In the Find What Field, use the single character ^ (which means roughly search for beginning of line). In the Replace with Field, use http://google.com/. Make sure the Search Mode option is set for Regular Expression and that the Direction choice is Down. Press the Replace All button.