Problem with Java 64-bit on my laptop

Hi :) I am too new for this forums :D so here is my problem
I use Windows 7 Ultimate 64-Bit
using Java 6u25 (64-bit)
so I did open my cmd and type -java version
its says "java is not recognized as an internal or external command operable
program or batch files.
but I do have Java 6u25 on my laptop! >.>

Check out this tutorial. It goes over every step to install, compile, and run a small program. Perhaps you didn't set the path? If you didn't this video shows that step.

TheNewBoston – Free Educational Video Tutorials on Computer Programming and More! » Java Programming Tutorial – 1 – Installing the JDK