@tig said:

n=inputbox(["Prefix; "],["N"],"Scene_Rename");Sketchup.active_model.pages.each_with_index{|p,i|p.name="#{n[0]} #{i+1}"}if n;puts

Copy+paste+enter this Ruby one-liner into the Ruby Console - it renames all scene-tabs in order with the 'Prefix' - e.g. 'N 1', 'N 2' etc...
The dialog lets you type in any desired 'Prefix'...

Hi TIG, Many thanks for this code. Is there anyway of adding some code to this that will allow you to select the scenes to rename?

Ludolff