At the last OpenERP Partner Days, Camptocamp presented the integration of maps in OpenERP: http://www.youtube.com/watch?v=sxbVWfLdU7E
As announced, the GeoEngine modules will soon be available for version 6.1 which is currently under way.
You would like to test GeoEngine ? Please go here and enter the following login information:
Username : demo / Password : demo
Camptocamp is available for any questions you might have: firstname.lastname@example.org