Geez louise.
You've got to use "mechanic's mind" on this one. Go thru the LightWorks material and make sure your scales and sizes are the same as in the Infernal Engine.
See : Color - make sure scales match
Texture space - size and scale to match ArchiCAD
there's a check box to ensure matching but I'm not sure how far it goes...
and you also know about aligning the texture to a point in the 3D windo....
Dwight Atkinson