HI

instructions say:
Download the latest version of Java Runtime Environment (JRE) 7
Scroll down the page until you reach "Java Platform Standard Edition".
Beneath this and to the right, you will see a red button marked "Download" for Java SE 7.
Click the "Download" button.

It isn't clear as there are lots of choices: do I download
a) "Java SE 7 Documentation";
b)"Java SE 7u3 -JRE" (which is one of 2 options just below "Java Platform SE" banner);
c) do I download Java Runtime Environment (JRE) 7 (which I cannot find) and then scroll down whatever is downloaded?