tested on Photoshop CS3, CS4 and CS5

Create your own predefined set of layers, layergroups and guides so you won't have to manually set these up every time you need a new psd.

copy build/bootstrap.jsx to your photoshop scripts folder:

Windows: C:\Program Files\Adobe\Adobe Photoshop CS5\Presets\Scripts
Mac OS: Applications\Adobe Photoshop CS5\Presets\Scripts

If you have copied the .jsx file to the right directory, the script should appear in Photoshop under file › scripts › bootstrap when you have restarted it. It might be nice to create a shortcut.

Edit the settings object at the top of the bootstrap.jsx to meet your own needs. Default setup creates a document of 1200x1200, with guides that center 978px horizontally and one vertical guide at 100px. Also a couple of layergroups are created, namely HEADER, BODY, FOOTER, and an extra layergroup + layer for the logo.

var height, margin, settings, width;
width = 1200;
height = 1200;
margin = (width - 978) / 2;

settings = {
  /*
    document setup
  */

  width: width,
  height: height,
  /*
    guides
  */

  guides: {
    horizontal: [100],
    vertical: [margin, width - margin]
  },
  /*
    layers
  */

  layers: [
    {
      name: 'HEADER',
      layers: [
        {
          name: 'logo',
          layers: [
            {
              name: 'logo'
            }
          ]
        }
      ]
    }, {
      name: 'BODY',
      layers: []
    }, {
      name: 'FOOTER',
      layers: []
    }, {
      name: 'BACKGROUND',
      layers: [
        {
          name: 'background'
        }
      ]
    }
  ]
};

        Numbers will be rounded off.
    </td>
</tr>
<tr>
    <td>guides.vertical</td>
    <td>array</td>
    <td>
        <code>[100, 100*2, height / 2]</code>

        Numbers will be rounded off.</td>
</tr>
<tr>
    <td>layers</td>
    <td>array containing objects</td>
    <td>
        <code>[{ name: 'layer 1' }]</code>

        Layers can be nested. If a layer contains another layers array, a layergroup is created. Every layer must be an object. If not, an empty artlayer is created.
    </td>
</tr>
<tr>
    <td>layer.name</td>
    <td>string</td>
    <td><code>layername</code></td>
</tr>

You must have node, npm, coffeescript and grunt installed.

Run npm link to create a local install of the grunt packages.

Run grunt to continually compile coffeescript and move the .jsx file to the photoshop directory. Set the proper directory in the grunt.js file.