Downloading and Installing Plug-Ins
When you find a plug-in that you want to download from a Web page, most often you can simply click a link to download the file, as shown in Figure 62-1.
Figure 62-1: Click the link to download the plug-in file.
Because plug-in files can be rather large, they’re usually compressed as .Zip (Windows) or .Sit (Mac) files.After downloading the compressed file, double-click it to decompress it. Your computer takes you through the decompression steps, as shown in Figure 62-2.

Figure 62-2: Decompress the .Zip (top) or .Sit file (bottom).
Tip | Decompression software comes with Mac OS X. If you’re running a Windows machine and you need the WinZip decompression software, you can download it from www.winzip.com . |
Next, place the file in the proper folder, as listed in Table 62-1.
Tip | I list the default folder for actions, which you can also download from the Web. Actions are mini-programs that perform long series of commands that modify images. (To find out more about actions, turn to Technique 8.)
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After you place the new filter or script in the appropriate folder, close Photoshop (if it’s running) and relaunch it. Then, look on the Filter menu for the new filter (see Figure 62-3) or on the File>Scripts menu. (Actions can be found by using the Actions palette.)

Figure 62-3: The new filter is located on the Filter menu.
If you like a good challenge and are mathematically inclined, you might want to try your hand at creating your own custom filters.You can create custom filters by using Filter Factory, a plug-in created by Joe Ternasky. Using a programming language that resembles C, you can create your own filters and effects and compile them into filter files.One of the best resources for the Filter Factory is Werner D. Streidt’s Filter Factory Web site at mitglied.lycos.de/filterfactory . There you can find an extensive Filter Factory manual and other resources.