Help New Static Mesh Not Showing Texture

[Nime]

Hello everyone!  :lol: 
I'm working on static meshes, trying to achieve something like this:

http://www.maxcheaters.com/topic/130444-build-yard-with-aion-adapted-for-lineage-2-interlude-by-volond1/?hl=yard

In that topic, kali wrote:

 

I adapted it as a NPC, but can be adapted as a staticmesh.

I tried with a custom mesh made by me, and it shows up in game, but I can't find a way to load textures. This is what I've found/tried by now:

1. static mesh have 1 geometry and multi submaterial IDs. However, submaterials will cause UModel to throw an errors: "wrong index type" or "mapalloc".
In game, the mesh will appear untextured.

2. static mesh with only one material. UModel will display it with the "coloured squares" default texture.
In game, the mesh will appear untextured.

I tried to link a game/offy texture to my mesh. The result is the same as point 2.
What am I missing here?  :huh: 

Feel free to PM me or skype me at nime080
Thanks!  ^-^