EDIT: I was looking at DAZ tutorials at the same time, so got myself a little confused!
There is a tutorial on the Wiki that covers using DAZ Poser models.
http://update.multiverse.net/wiki/index.php/Using_Poser_to_Create_Characters_and_Animation
(This is from the old Wiki, as the tutorial images haven't been moved to the version on the new Wiki yet)
Looks fairly straightforward to me - he also wrote modified scripts for SampleCharacterCreation.py and character_factory.py, to enable you to actually include your new models in the character creation dialogue.
He's also got a directory of interesting tools, which include exporters for Blender, SketchUp and even Second Life... I'll take a look at them, see if they're still of any use.
The DAZ plugins are also in that directory - he gives instructions on how to use it during the tutorial.