Here is a set of Gel Styles for Photoshop (*.asl format) available for download at Deviant Art [link]. Just click on the link that says ‘download‘ on the left-hand side of the preview screen. I originally created these styles in Photoshop CS, and they’ve worked all the way up to CS3. I recently bought Photoshop CS4 but I haven’t had the chance to test them out.

Web 2.0 Gel Styles for Photoshop by Jessica C. Green is licensed under a Creative Commons Attribution-Share Alike 3.0 United States License.
Permissions beyond the scope of this license may be available at http://ardathksheyna.deviantart.com/art/Gel-Styles-and-Outlines-23252763.