Java applets is not running in your Internet Explorer (IE) web browser ? This means Java is not enabled in the web browser. You may need to enable Java in your web browser ( even it is already installed).
Here are the simple instructions to enable in Internet Explorer ( 4.0 and Up )
1. Open your Internet Explorer Web browser
2. Select Tools and then Internet Options
3. Select Advanced Tab, and scroll down to see Java (Sun)(as in the picture)
4. Check the box (next to the Java version)
5. Now, select the Security Tab
6. Select the Custom Level button below
7. Scroll to Scripting of Java applets and Check the Enable radio button
8. Click OK