I've faced this problem before I guess because you are using windows XP and IE 6, there is a tool called java virtual machine (JVM) microsoft used to install it in the past but due to it's problems with SUN (thier enemy) I guess, they have stopped intalling it with the new versions of IE, you must be install it on your windows XP you can search for it on the internet the file is called (msjavx86) and it is an exe file for sure