Assuming you have found an ISO (disc image) of Adobe Photoshop CS3, follow these steps based on your operating system.
(version 10.0) was released on April 16, 2007 . It was part of Adobe's Creative Suite 3 (CS3) lineup, which was a landmark generation for the company. For the first time, Adobe released universal binary versions for both Intel-based and PowerPC-based Macs, coinciding with Apple's transition away from its own processors. On Windows, it was the first version to officially support Windows Vista . Searching for- Adobe Photoshop CS3 in-
You may be able to get CS3 running by bypassing modern restrictions: Assuming you have found an ISO (disc image)