Can anyone help?

Hi. I'm trying to use the su2ldraw plugin in Sketchup 7 and have managed to get the plugin working in Sketchup layout and I can choose all the options and write to where my LDraw folder is
but I can't load any parts or models.

In the script it says i need:
ldraw/ numeric.rb
dev/ debug.rb
dev/ corner_vertices.rb

Where can I get these and where do I install them?

Is this right?
Mac HD/...../ Application Support/ GoogleSketchup 7/ Sketchup/ plugins/ ldraw/ numeric.rb
Mac HD/...../ Application Support/ GoogleSketchup 7/ Sketchup/ plugins/ dev/
debug.rb
Mac HD/...../ Application Support/ GoogleSketchup 7/ Sketchup/ plugins/ dev/
corner_vertices.rb

Thank you for any help that can be provided.