Hey guys i watched a lot of lfs videos and everyone tells my that i need to press Shift + u but when i try to give accerlatte the car wont drive but what i only can use is the camera to go up,down,left,right like that how i drive + new camera look

Here is a example: http://www.youtube.com/watch?v=8yBd9-7c4BA

How they do that when drive + Camera look pleasee help

You cannot drive using your keyboard / mouse in Shift+U mode. It is only possible when using a wheel.

The video you posted was recorded in a replay mode.