The Adobe Photoshop CS4 Upgrade for Windows includes a key and Learning Creative Suite-4 DVD, offering photo/image/graphic editing capabilities. This software, developed by Adobe Systems, is designed for Microsoft Windows XP, Vista, and Windows operating systems. With a minimum of 1 GB of hard drive space and 512 MB of RAM, this upgrade ensures smooth and efficient performance on systems with a processor speed of 1.8 GHz or higher. The English-language DVD format makes it easy to learn and explore the features of this standard license software.