Transparency??

[Traggey]

For a transparent area in HPL you'll need to add an extra material to the glass area before exporting to HPL, then create a second material file using the HPL material editor, in that material change the blending mode to for example additive, there are several different blendmodes you can use for glass so play around untill you find the desired effect you're after.

Also, quick question, where'd you get the model from?