Here's a glossy button I created in Photoshop CS3. You can download it and customize it if you'd like. There is a Hue/Saturation adjustment layer which makes it easy to change the color of the button. Just double click the layer thumbnail and adjust the settings until you get the color you want. The text layer can easily be changed as well since the inset effect is created using a Bevel and Emboss layer style.
Below are three examples of how the button can be customized by quickly adjusting the hue and altering the text:
> Click Here to Download
8" x 8" 150 dpi