Icon & JOptionPane

Firstly I've been coding a mathematical collection of programs in Java. All of which solve problems in math easier than using a Calculator. But when the answer message is displayed in a JOptionPane i wanted to know if there was a way of removing the Icon seen to the left of the answer as shown below.

Attachment 3619

You can also see from the photo (above) that the Heading or Header on the JOptionPane just says 'Message' how do I change this to a custom message? Also going back to the Icon is there anyway of also adding my own Icon to the Complied .class file so when sent to other computers it is shown as the Icon not the Cup of coffee symbol?

- Goughyy_

Have you looked at all the methods available to JOptionPane in the JOptionPane API?