After clicking the button (whatever button you clicked to get here), the world goes black and you seem to float in darkness for a time. You emerge in a small bedroom, looking very much like this:
You also see a door. Opening it up and looking through reveals more darkness, with some signs. (The Door)
The Computer. Ah, the computer. This is the most important object in the room. It has a flat screen that sits upon a small case, with a keyboard and mouse that seem sized to fit a child's hand. Printed below the monitor is "Navi Mark I." As you touch the mouse the screen lights up. A voice says, "I have mail for lain. Would you like to view it?" You have the option of "Yes" or "No."