Collision Questions

Ok, still cannot get this to work. Wondered about the gravity thing as it wasn't acutally doing anything. So I borrowed the code from the driver demo and insterted it, changing the names as required.

So instead of having this:

If KeyDown(200) 
	MoveEntity ship,0,0,-800	
EndIf

I have this

	If EntityCollided( ship,RACETRACK )
		If KeyDown(200)
			speed=speed+20
			If speed>700 speed=700
		Else If KeyDown(208)
			speed=speed-20
			If speed<-.5 speed=-.5
		Else
			speed=speed*100
		EndIf
		MoveEntity ship,0,0,speed
		TranslateEntity ship,0,GRAVITY,0
	Else
		TranslateEntity ship,x_vel,y_vel+GRAVITY,z_vel
	EndIf

but the above code won't do anything at all. The ship just stays total still :( I appreicate the values are really high, but I wanted to make the ship move before trying to scale it all down.

Any more ideas anyone? Please?