Save it in some folder inside your Photoshop directory. Then go into Photoshop, and on the right side of the PS desktop, you'll see a little window with two tabs on it: History, and Actions. Select the Actions tab. Just to the right of the tab, you'll see a little button with an arrow on it. Click the little arrow button and click the Load Actions... item on the menu that pops up. Then go find your action file and click Open. Finally, click the little "Play" button at the bottom of the Actions window to run your action.
---Skorpion
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