I have two pages indexed by Google. I'll call them New Page and Old Page for the purpose of this question.
Google prefers to show Old Page on in search results, possibly because it contains a couple more occurences of the keyword 'Page'.
I'd like to use a sitemap to tell Google that Old Page is less important than New Page. Searches for 'Page' should return New Page, unless someone specifically asks for Old Page.
What do you feel would be a sensible level of priority for Old Page in the sitemap, and how long should I wait for Google to respond to such changes?