Things You'll Need
Instructions
Download the Dynamic Theme Editor application from the PS3 Themes website. Install the 64-bit version of the program only if your computer has at least 4 gigabytes of random access memory, or RAM. Otherwise, install the 32-bit version of the application.
Run the Dynamic Theme Editor program. Click on one of the five available theme tabs to select your starting template. The background that you make will be based on this existing template.
Click the "Open" button in the "Edit the DDS Files" section of the template menu. Browse to the background graphic that you want to edit.
Open the file in Adobe Photoshop, and edit the background image to your specifications.
Click on "File" in the main Photoshop tool bar and select "Save" from the drop-down menu.
Exit the Photoshop application and return to the Dynamic Theme Editor.
Click the "Browser" button in the "Select a Save Destination" section of the template window. Select the desired save destination for the dynamic background file. Click the "Start" button to save the completed file to your computer.