Info : Drupal OpenLayers Module Preview

What does the module do?

The OpenLayers module enables the display of nodes containing geospatial information to be displayed on an map using the OpenLayers framework. Once enabled and configured the OpenLayers module operates in two modes:

1. Any node containing data from the Location module displays a map link which shows the node's location on a map (eg this event node has a Location set which enables this map to be displayed).
2. Any view can be configured to display a group of nodes as a map, by changing the Page View Type to 'OpenLayers map'.  This link shows a view configured to display an OpenLayers map view showing all Meeting nodes (a CCK custom node type).
   
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Courtesy : http://drupal.andrewl.net