Step one: First create a shape on its own layer.

Step two: Open the "Styles" palette. Apply the glass blue button by clicking on the icon shown.

Step three: Open the Layer Styles dialog box by clicking on the "f" icon in the objects layer. Highlight the Inner Glow effect on the left side of the dialog box, and change only the settings under Quality. From here, you will be simply making changes to the Style you just applied.

Step four: Under Bevel & Emboss, change the Gloss Contour curve to the setting shown here.

Step five: Below the Bevel & Emboss checkbox, you will see the Contour checkbox. Hightlight Contour, and change the Elements contour setting shown to the right.

Step six: Select the Outer Glow checkbox to add an outer glow to create a faint outline around the surface should you need to create separation from the object and the back-ground. Use the settings to the right.

Step seven: To add some depth to the effect, I applied the Satin effect. Using the default settings seemed to suffice.

Step eight: As a final touch, I gave the shape a Drop Shadow. Drop shadows are always nice touches. Of course, you can always change the color by changing the default color of the style.