Thanks to all in the forum who helped, now i am able to make my own segments. Here is a small example, my first tunnel.
How do you like it. There is just one thing i am still wondering about: As you can see on the floor, my texture is seamless. The UV mapping coordinates i applyed to my tunnel geometry should use the whole texture and therefore it should be seamless as well ... but as you can see, it is not really :-(
Isnt it that way, that the segments use the UW maping data which is embedded in the .X mesh data?
Regards,
Heiner
Imagination rules!!!