This is the latest version of the KMZ importer, more and more models are loadable and more importantly, the edit box is working now. You can bring it up by middle clicking on the model and selecting edit. Other changes include:-

-Optimized rendering to improve performance

-Updated material and texture properties

-Object scaled to original dimensions

-Added control over the scale of the object

-etc….

Instructions on installing Cobalt and KMZ Importer

This version requires Cobalt20081112 and above. 
- From web browser, download Cobalt
http://croquet-src-01.oit.duke.edu/cobalt.html
- Save in a folder e.g.
c:\cobalt
- From Windows Explorer, unzip and open the containing folder e.g.
c:\cobalt\cobalt-base-current-build-20081112
- From web browser, download the monticello package
KMZ Importer 0.2
- Save in the package-cache folder e.g.
c:\cobalt\cobalt-base-current-build-20081015\package-cache
- From Windows Explorer, double click on Croquet.bat
- Inside Cobalt, click on black background to open World Menu.
- Select ‘Open’ ‘Monticello Browser’
- In Monticello Browser, in right pane, click on the package-cache directory e.g.
c:\cobalt\cobalt-base-current-build-20081015\package-cache
- Click open
- In the new window that opens, select
- Collada-kayef.22.mcz
- Click load
- Close the Monticello Browser
- Open a Transcript
- Launch the Cobalt world
- From menu, select Objects>Load from local file
- In window, search for *.kmz file
- Click ok
- Enter scale in window or click ok
- Wait for the model to load (might take a while)

The following kmz files works with the importer, other models might not load or might show up funny:-
Ipod Nano
Mac Book
LCD TV
Female model
Another female model
A house with a model car

**Known Problems**
-Squeak complains space is low (happens to files with large texture jpeg)
-Texturing mixed up (work is still in progress to get the mapping done correctly)
-Broken pieces or wrongly placed (some of the meshes have non-default translation and rotation, problem will be looked into very soon)
-Wrong scale where some models end up too big or too small therefore not being visible (will correct this soon)

To try out other SketchUp models:-

Download the models from Google’s 3D Warehouse as SketchUp 6 models
Open the model in Google SketchUp
From menu bar, Click File>>Export>>3D Model and choose the file type as Google Earth 4
Save the file in the Cobalt folder
Launch Cobalt and import the model