We're working on a link to SketchUp 8...

[David]

Our development team are currently working on a plug-in for the latest Google Sketchup 8.
Until this is released you will need to use Sketchup 7.

You can still download Sketchup 7 from the following page:
http://sketchup.google.com/gsu7/download.html

Note: You can save SketchUp files as version 7 from SketchUp 8.

[David]

We're hoping to release next week!!!