Victoria is Poser/DazStudio content product just install it into your regular runtime.  Then in Carrara make sure you have added that runtime to the Content tab of the object browser.  You have to add the Carrara specific shaders to her.  There is a tutorial to save all the shader steps into just one, as well as what shaders to  use for V4. 

I have in mine for example I use an external runtime for just about everything.  There are some things that DazStudio ships with.  So I added both those runtimes to Carrara.  I also have a temp runtime that I test things with and can wipe completely.

V4 shaders in Carrara
http://forum.daz3d.com/viewtopic.php?p=1076290&highlight=#1076290
Saving the shading domains to one drag item (works for many objects).
http://forum.daz3d.com/viewtopic.php?p=1099125&flatnum=1#1099125

You can copy the poser.exe stub that is in the DazStudio directory (its to fool installers BTW) into any other runtimes for when poser is required, however by selecting dazstudio you are getting everything you needed.  Make sure you run the update victoria that shows up on your desktop, and have only one installed.