Click to Accept License Agreement, select download Windows x86 ot x64. It's jdk-7u2-windows-i586.exe for Windows x86 in my case.
Execute the downloaded file.
Accept the Destination Folder, click Next.
Click Continue button to continue JavaFx 2.0 SDK Setup.
Install JavaFx 2.0 SDK Setup, click Next.
Accept the JavaFx 2.0 SDK installation director.
Complete by clicking on Close button.
A browser will open for you to register your software.
In order to verify the setup correct, you have to run "cmd" in Windows. Refer to the article about how to run "cmd" in Windows 8.
Update to this step, you cannot run javac except you are in C:\Program Files\Java\jdk1.7.0_02\bin. Because you haven't set PATH.
To setup path, refer to the post "Set PATH for JDK 7 on Windows 8".
Refer to the post "Hello World of Java 7 on Windows 8, in 'cmd' DOS Prompt" to verify your JDK installation.
Updated@2013-01-17: Install JDK 7 on official Windows 8