Free LEGO Digital Designer Software Downlaod.

Build your Creation Then Build it.
Click Here to Download.

Improved building experience
Quicker selection of bricks
Easier to connect bricks when building
New brick palette tool for easy use
More Bricks in the palette
Partly built models for easy start up
New backgrounds for model view
Support for the Market Street and the Hobby Train box
Improved virtual building guide generator
Complete redesign of [...]