Separations for a serigraph (screen printed fine art)

Could someone direct me toward an article or tutorial for doing color separations for a serigraph (screen printed fine art) using Photoshop, I’m running CS on a pc. I’m just getting started in Photoshop and most that I have read has to do with CMYK which does not apply to my particular application. As I understand it will involve spot colors and trapping, an example would be a six color print with each of the six colors printed separately on clear film. They are then screen printed one color at a time (usually light to dark) trapping each color. Right now I produce them by hand on a light table. I do not have a plotter to output to so I will be contracting that out.

Thanks, Ricky

Found a simple explanation for creating separations, still working with it any suggestions appreciated!

1. In your file, use the magic wand tool to select an area of color. Once it's selected, go to the Layer pulldown menu and select New > Layer Via Cut. This will put that color on its own layer.

2. With your eyedropper tool, sample that color. You'll see the color picker dialog box come up, and now click on the Custom button. When you see the Pantone colors come up, the corresponding PMS color will be selected. Make a note of that color.

3. Make sure the selection you just put in its own layer is loaded (using a Mac, command + click on the layer in the layers palette). Now, in your Channels palette, click on the flyout menu on the upper right (the little triangle). Select New Spot Channel.

4. In the New Spot Channel dialog box, click on the Color box, and then type the number of the PMS color you made note of earlier. The Color Picker will automatically go to the number you're typing. This creates a spot color channel of the area you selected and separated to a new layer.

The Solidity option gives you an on-screen simulation of the solidity of the printed spot color. A value of 100% would simulate an ink that solidly covers the inks beneath, and a value of 0% simulates a transparent ink (like a clear varnish). But this only for on-screen simulation, and has nothing to do with how the image will actually print.

5. Once you've done this for each color, then you can go to the File menu, select Save As, and then select Photoshop DCS.2, which of course will generate the 4 color seps, and an EPS. Also, make sure you have Spot Colors checked when you're in the Save As dialog box (you'll see this right below and to the right of the Format pop-up menu).

hey if someone knows how to do this tell me too.