The Autodesk AutoCAD LT 2009 Upgrade CAD Software DVD is a professional CAD and CAM software product by Autodesk. It is designed for upgrading existing AutoCAD LT 2009 installations on Windows operating systems. This upgrade version requires a minimum of 2GB of RAM, 200MB of hard drive space, and a 2GHz processor speed for optimal performance. The DVD format allows for easy installation on a single device, with English language support for ease of use. Ideal for businesses and professionals in the field of engineering and design, this upgrade software offers enhanced features and capabilities for improved efficiency and productivity.