Designing a web 2.0 look all purpose logo

Create another rounded rectangle using rounded rectangle shape tool.

Double click the layer to open layer style window. Apply settings as shown.

Ctrl+Click to get the selection. Contract the selection by 1 pixel. Create a new layer. Apply Black to white gradient.

Change layer mode to "screen" and opacity to 60% for this layer.

Duplicate all the layer. Press Ctrl+T and scale it down. Press Ctrl+E to merge. Place as shown.