I'd never tried before, but I just tried importing a couple of the default poser 5 figures into blender and none of them imported.  DAZ figures import just fine, though.  Do you have another poser figure to import, just to test?

For the record, though, Blender is pretty unusual in a lot of ways.  I highly recommend reading some of the tutorials on the interface, e.g. how to move around, create windows, etc., and then looking into the UV mapping tutorials.

Does anyone else know any tutorials for the current version of blender's UV mapper?  It's changed a bit since all the tutorials I know of were written.