Gazebo 4 - Ros interaction ?? [closed]

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Hi!

I'm doing a Gazebo based simulator, I have some restrictions (I have to use Ros Fuerte), so I'm using Ubuntu 12 and Gazebo 4 (I saw here http://gazebosim.org/ that it was the last compatible with Ubuntu Precise).

I'm not able to generate any Ros topics from my cameras or other sensors, only see them using the gz topics: gzserver room.world --verbose
gz topic -v /gazebo/default/camlens_left/left_camera/image (I need to pass this to a ROS topic).

My question is, is there any way to interact between Ros Fuerte and Gazebo 4 or do I have to use the first version of Gazebo and rewrite my models and world?