Different Login Behavior

I would like to keep users from getting to the wp-admin area unless they are an admin. Instead I would like them to be redirected to a page that says something like the following

Welcome Blog User!

This is what’s new since your last visit!

^Posts are new since last visit or login^

Join in on the conversation!

^Latest Comments Displayed^

now what plugins and code do I use to make this happen?

Thanks and loving the new WP