The beta release of Shaderlight for SketchUp will be available to download from tomorrow 11th june10

As an interactive, photorealistic renderer for Google SketchUp, Shaderlight lets you render great images quickly and simply.
Fully integrated in to SketchUp, and SketchUp Pro, Shaderlight lets you see your image “develop” as you work, interactively updating every time a change is made to any SketchUp scene. So whether you’re an experienced user or using SketchUp for the first time, Shaderlight gives you the tools to get to that final image with minimum fuss.
The beta release of Shaderlight for SketchUp is available to download now.
Advanced lighting features and the Shaderlight’s trademark MELT functionality - the ability to make interactive changes to materials, environments, lights or textures - will be included in the full release of Shaderlight for SketchUp in late 2010.

http://sketchup4architect.com/sketchup-plugins/shederlight-plugin-for-sketchup.htm