First you should make sure you are using the latest version of the Internet Explorer web browser and you should make sure you have the latest version of java at www.java.com
Also, you can try using the "Control R" or "Control F5" keys to do a hard refresh on the webpage. And if you still have problems you should try using a different web browser such as Firefox to see if this will resolve the matter.
the "play computer" function does not work. it says to load Java which i did but i get nothing. i use windows explorer. should be a simple task? any ideas?