Issue with URDF tutorial in ROS Groovy

edit

I just started on the tutorial here and ran the code for the example urdf -

roslaunch urdf_tutorial display.launch model:=01-myfirst.urdf

This gives me an error which goes like this -

New config files have an .rviz extension and use YAML formatting. The format changed between Fuerte and Groovy. There is not (yet) an automated conversion program.

What should I do with this error? I didn't find any alternate way yet. Could anyone let me know about this? Thanks.