Which version of java are you running in your browser?:
You should see a pink box above with one line of text that says something like:
Java Version: 1.1.4 from Microsoft Corp.
or
Java Version 1.4.2_02 from Sun Microsystems Inc.
or
Java Version: 1.5.0_10 from Sun Microsystems Inc. <-- This is the latest version
*** Your online experience will be best if you are running the latest version of SUN java. ***
To download the latest version from Sun Microsystems, click below:
www.java.com/en/download/windows_automatic.jsp