I think you mean with the double thickness of the taskbar?
Right click the task bar and unlock it. Move the cursor to the top , left click and hold the button down. move the cursor up and it will lift the taskbar up. re-lock the taskbar. When the task bar is inlocked you will see little dots which allows you to alter the areas available by sliding them along.
The quick launch area to the left is again right click and this time choose properties from there you can show quick launch area.