Go here http://java.sun.com/javase/downloads/index.jsp scroll down to Java Runtime Environment (JRE) 6 download it, BUT DO NOT INSTALL IT YET. Save the set up to your documents or your desktop, then go to your control panel add/remove programmes and remove all Java 1.5 (or lower) there may be more than one programme so please check. When you have done install the JRE 6 then re-start your PC.