Having Problems Making Transparent Windows

[TheKman]

I still haven't got the hang of doing transparent windows. Enclosed is a caboose I made. As you can see, the windows are whack.

I'm using Sketchup to build the model and 3DC 9 to do the export for the shape

My custom fields in 3DC are as follows.
Primary texture slot is my TGA file for the glass.
No texture in the Enviroment Map slot. ( I've seen docs that this is optional)

Railsim slot = TrainGlass.fx
Tx Alpha slot = Transparency
RailSimX= r0arg0=64;r0arg1=0.8;r0arg2=0.4

What am I doing wrong?
Thanks.