As you’ll recall, several months ago Microsoft acquired Caligari because of their advanced 3D toolset - trueSpace (among other assets). So starting today trueSpace 7.6 is now available for download…..FOR FREE! And, there is a direct connection into Live Search Maps so you can create SUPER high resolution 3D models using trueSpace, then right from the environment upload the model into Live Search Maps as a collection item. Once you’ve created your collection, you can import your collection into your Virtual Earth application and BAM you have your own custom 3D models in your Virtual Earth application. We’ll host the models right in our 3D collections cloud! This is going to be a long post - get some coffee and make it diesel.

Register and Download trueSpace 7.6 for free:
http://www.caligari.com/Products/trueSpace/tS75/brochure/intro.asp?Cate=BIntro
http://cart1.caligari.com/web/Truespacemainreg.aspx

Source- MSDN Blog