Daz gave us the C6-compatible shaders for V4 as a present with carrara. In fact, the poser shaders for anything are not quite right in Carrara. All the bump maps come through set at 0% and have to be tweeked to the proper level. Many, many texture maps open with another color multiplier on top. Any like this need to be corrected in the shader room (after which you can save them as "my objects" in the browser).
Load V4 into your scene and try dragging the carrara V4 shader onto her. This should work, though I personally don't like the default texture (sorry, DAZ). There are several other textures for V4 to play with in the poser v4 content folders. You can simply copy and paste the texture map into the shader room when V4 is selected.
There is a very good tutorial over at DAZ on shading V4 (I think it is called "V4 got you seeing blue?") and several others that are easy to follow and will give you a great looking V4.