Ah right i never knew you could do that. Thanks. So i made a test track to experiment with (A circle) and used this sort of shape for the cross section of the track:
__ __
| |____| |
|_______|

However the texture is going on the bottom of the track so it's not going where it should. If i use this sort of shape for the cross section of the track:
__ __
| |___| |

When you look at it from the top it's not there but if you look at it from the bottom it's there. So is there any special way of doing this so the texture will go in the right place?