Specifying a keyboard type!

Recently I purchased a bluetooth JIS keyboard, I am studying Japanese. It works great, How ever I would like to use all its features (especially the one key entry of kana) by specifying the keyboard type JIS, ANSI etc.... According to the Apple Support pages I can do this by,

Specifying a keyboard type:
When you connect a keyboard that is not immediately recognized, the Keyboard Setup Assistant automatically opens so you can specify the keyboard type (ANSI, JIS, or ISO). There are three keyboard types that Mac OS X recognizes: ISO (Europe), JIS (Japan), and ANSI. The ANSI keyboard is a standard 101-key layout widely used in the US, North America, and many other parts of the world.

If you are having trouble with your keyboard, you may need to specify the type manually. You can use Keyboard & Mouse preferences to open the Keyboard Setup Assistant and specify the keyboard type.

To specify the keyboard type:
1.Open System Preferences and click Keyboard & Mouse.
2.Click Keyboard.
3.Click the "Change Keyboard Type" button.
4.Follow the steps when the Keyboard Setup Assistant appears.

Okay so I must be blind! Step 3 I don't have a Change keyboard type button, in the system preferences>keyboard.

Nor can I seem to locate a Keyboard Setup Assistant!
Help!