Google Maps Plugin

Hi I am looking for some input on the google map plugins that are out
there. I want to be able to use a google map within my site where two
addresses can be entered and the directions along with the path are
shown. Is this possible with the Google Maps API in general? And if
so, does anyone have any implementation experience with any of the
rails plugins out there to give advice on the best one? Is there one
that will be easier to add directions capability to? Thanks, Dave