Each PageKits.com template includes the Photoshop PSD source file(s) used to create the template. This allows you to customize the design to your heart's content.
For maximum compatibility we recommend Photoshop for editing the files, although you can also use Fireworks, The GIMP, or any graphics package that can open PSD files.
If you don't want to edit the PSD files, don't worry — you don't need to edit them in order to use a PageKit.