ZModeler glass issue

Hey,

I'm having issues mapping glass onto a vehicle.

When I add a glass texture to the window or lights they look fine in both OpenIV and ZModeler but when I go and play GTA IV the texture isn't there? And I went to shoot the glass but the window wasn't even there?

P.S. I'm a newbie in ZModeler.

I am using this tutorial: http://www.lcpdfr.com/page/tutorials/index.action/_/vehicle-modification-tutorial/how-to-map-and-make-templates-for-gta-iv-models-r1

But he doesn't mention adding glass.

Edited March 23, 201412 yr by AUXCable