Thanks everyone. I think I installed it and I can see it under my plugin menu. However when I try to use the tool by following Chris' tutorial, it doesn't work. After I selected the component I created I try to click the curve line/straight line, but there is no line can be selected. Anyone has same issue? Or it just because I haven't install the plugin properly?

Hi, just wondering if this plugin can be used on SketchUp Pro8(Mac version)? It seems like that SK pro 8 requires a plugin with an extension rbz instead of rb. Any ideas? Thanks a lot.