Openni node can't find device in simulation

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Hi everyone:

I try to start the manipulation pipeline following this

First launch pr2_gazebo pr2_table_object.launch

Since I want to use kinect sensor, I launch the pipeline like this:

roslaunch pr2_tabletop_manipulation_launch pr2_tabletop_manipulation.launch stereo:=false

Everything looks good...but at last, it keeps telling me that:

[INFO] [1358084747.016012678, 248.407000000]: [/openni_node1] No devices connected.... waiting for devices to be connected

I trace the launch file and finally find that the pipeline will start the openni-related node from openni_camera_deprecated, which is now replaced by openni_launch.

How could I modify the launch file to make kinect sensor work?

I'm using ROS Fuerte on Ubuntu 12.04

Thanks for any advice~