Making Rounded Corners in Photoshop
Open the pic you want to have rounded corners on.
Select the tool for a rectangle with rounded corners.
Make the new layer and draw the rectangle with rounded corners on it.
Click the path tab on the new layer with the rectangle.
Click the small arrow icon and choose “make selection”.
Select the picture layer.
Choose Inverse from the Select menu. Choose Clear from the Edit menu.
(Or, in Fireworks, just paste the image into the shape!)