Previously we had covered a topics own replacing Start ORB (start button) in Windows 7. But for that, you need to download ORB buttons from the internet.
Here is a simple program called Start ORB Creator that lets you create your own Start ORB button from any image you like (png & bmp).
The portable utility by “Blizo” from Devianart lets you quickly create and apply your own custom Start ORB in Windows 7. You can add shadow and glow effects for hover and click events for the start button.
Download Start ORB Creator for Windows 7 (via)