Dusty:
Basically you could create the contents even in MED. Blender works fine and so does Lightwave (with the exporter) or any other big tool. Believe me, your artwork will not automatically get better with a 1000 $ software. Painting, knowing how to create several details, experience and many tutorials are the key. And good models can even created with very cheap modellers.

Additionally it is important to know how to create normalmaps, height maps, alpha channels and to add that into the appropriate images. Since this is not mentioned in the txt file I could imagine that many people need more info's about that.