Haha thats a tiger desktop get leopard.
1. Dock - Shortcuts
2. Control bar - When on finder the file may create a new folder and in edit like there will be copy and paste. It's the equivelent of Windows explorer,
3. Thats a hard disk with the HD icon or are you talking about the icons if so them icons are like at the bottom right of your start menu with the time it kinda shows the wi-fi signals,time machine etc