You only need to do this step if you are having problems and have tried everything else!
If all else fails, then removing Java from your system & re-installing might fix your problems. First you need to remove it...
You may have to wait 2-3 minutes while the systems checks what is installed on your PC...
Make sure that you are on 'Change or Remove Programs', which is the default so you should be there anyway.
Scroll through the list until you find entries for 'Java(TM)' with a version number. On each entry you find with the name 'Java(TM)', press the 'Remove' button & follow the on-screen intructions to completely remove the Java program from your computer.
Once you have removed any old versions, you can close this window.
...this button will take you to the official Java.com site!
Just click the big 'Free Java Download' button near the top, and follow the instructions!