Irrlicht Engine

I tried this: But the camera didn't move faster; that was the reason why I asked in the forum.
Does anyone of you know why?

I was trying the terrain renderer and think that the movement is a bit too slow.
Is there a possibility to move faster?

all examples aren't working, except the techdemo with opengl. they always say, that they had problems by initializing the DirectX driver. and why doesn't the software renderer in the techdemo work? i tried it on a 1 ghz athlon with nvdidia tnt and on a 233 mhz pII with old 4meg ati. could you please...