LEGO Digital Designer version 4.3 is not available on PowerPC Macs
Disclaimer The LEGO Group of companies (LEGO) is providing LEGO® Digital Designer (the Software) at no charge. Any commercial use of the software is strictly prohibited. The entire risk arising out of the use or performance of the software remains with you. The software is provided as-is without any warranty of any kind. The entire risk arising out of use or performance of the software remains with you. To the maximum extent permitted by applicable law, in no event shall the LEGO Group of Companies (including LEGO Systems A/S) and its suppliers and licensors, be liable for any damages arising out of the use or inability to use the software. To install and use the software, you must agree to the terms of the LEGO Digital Designer 4.3 License Agreement included with the software. Please be sure to read the License Agreement before installing LEGO Digital Designer 4.3 on your system.