If you haven't already done so, download Kitty Spangles Solitaire
or Sudoku.

Press Continue when you're asked if you want to continue downloading. Then be sure to Agree to the terms in the license agreement.

In Leopard (Mac OS X 10.5) or Snow Leopard (Mac OS X 10.6), Kitty will appear in your Downloads folder.

In Mac OS X 10.4 (Tiger) Kitty will appear in your chosen downloads location (usually the Desktop).

Drag Kitty into your Applications folder.

Open your Applications folder.

Drag Kitty from your Applications folder into the Dock.

Click on Kitty in the Dock.