Don't give up, adding shadows isn't that hard, and makes a big differnce in some images.

Make sure you have the latest version of DAZ Studio, you can download it free from daz3d.com

Try this and see if it works. Go to your render settings, and set it to 3Delight. Add a wall and V3 close to the wall. Next add some lights, with one in front of V3. Select the light that is in front of V3, then go to the Parameter tab. Lift the light off the floor, and pull in back ( Y and Z translate). Scroll down on the Parameter tab, and you will see an opition for Shadow Type. Try using Raytraced. You can also change the color of the light, the intesity and the angle spread. Make sure you have enough light to see V3 and the wall fairly good. Now you can do a spot render, to see if it works.

Adding the shadows to different lights give different effects. You can play around and make shadows from a chin, on the neck, and so forth. Just keep in mind when adding shadows to a light, that depending on where the light is, is where the shadow will fall. Just make sure you have something for the shadow to fall on. A shadow light behind the person, causes a shadow in front of them, but if the camera is too close, the shadow wont be in your image.

I'm not sure if any of this makes sense, if not, drop me a note, and I'll try to explain better. Good luck with your renders.