Don't even get me started on the almost 10 year old "buttons" EZ-Net offers. Use a simple graphics program and just make your own. To keep it simple you're better off just throwing in some java and doing your buttons that way.
Don't waste time trying to get the EZ Net ones to do anything. They are also text limited to only a few characters. If you need some simple code there's plenty of free java sites out there.
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