Simple Google Map plugin that will draw a map on your post/page based on Latitude Longitude that is inserted.
Google Maps TO is a plugin that will draw a Google Map on your page/post that will include field called google_map_latlng with the values of latitude,longitude. So for example -12.9703817,-38.5123820 will draw a map of Salvador in Brazil on the page/post that include that Latitude,Longitude as values for google_map_latlng field.
To get this working you need a Google Maps API Key. This can be retreived from http://code.google.com/intl/sv/apis/maps/signup.html
You will have to include that code under Settings -> Google Maps API key.