I sent you an e-mail with the updated code attached.
You didn't load any textures that't why they were not showing up.
I've included a quick-'n-dirty BMP loader that handles 8, 24 and 32 bpp bitmaps. The loader will also scale textures if their dimensions are not powers of two.

The cactus model, however, seems to be broken. There are some cull-mode related issues as well as misaligned triangles. This is an issue with the exporter, in case you didn't modify the original output.

Textures will not be exported (though tex.-coordinates are generated) so there will only be one texture per exported model. Consider writing a loader for binary or ASCII formats since this allows you to also load and assign different textures for different parts of your models. The Deep Exploration exporter might not support that (I don't know, I'm not using it and my remarks are based on the source code you gave me).

Cheers,
Pat.