Tarkus : Thanks. My piece is designed to be used in 10m slope at minimum, similar to that street FLUPs portal. Hope I can see this is added into the NAM lineup.
But some not good news here.
I have finished the LODs, and exported it to a 3DS file, but my gmax suddenly started not work probably. I saw two process - gmax.exe & gmax12.exe - initiated, they took up almost all my CPU usage, made my pc response slowly. I could only forced log off to terminate them.
I am using win7, so I think XP mode may solve it. but no time to install it in the coming several days orz