Actually this is a better link
http://java.com/en/index.jsp Click the yellow GetItNow button in the big green box up in the right hand corner of the screen. That will go to an automated download I think. Just follow the directions to download.
I use linux not windows so it tells me to download a linux version.
The Sun Java VM you'll be getting is what you need. They are the same thing basically.
*makes long story short* Microsoft basically stole java from Sun Microsystems and tried to then make a microsoft version that only was compatible with windows programs. That's what microsoft does best lol. Anyway microsoft had to stop distributing "their" version of it.