Adobe Photoshop CS6 includes an automated preset migration feature. When you first launch Photoshop CS6, you can migrate any custom presets from previous versions as far back as CS3. If you don't choose this option, you can migrate presets later by choosing Edit > Presets > Migrate Presets. You can also manually import presets from previous versions by choosing Edit > Presets > Export/Import Presets.
Important: Restart Photoshop after you migrate your presets.
Note: Plug-ins and preferences are not migrated. Never copy plug-ins from previous versions to a different version of Photoshop. See this TechNote for more information on Photoshop's plug-ins.