Quote - so... I don't need any lights? just the env. sphere???

As long as you're using a version of Poser that has IDL.   Do a search in the forums here and you'll be sure to find a plethora of information on lighting with the Env sphere or emitters.  

If it's a bit daunting at first you may want to try the Sunlight product at RDNA which has it all set up for you but you really should read BB's tutorials and try out his sample scene.   When you have total control of lighting your scene you'll almost always get the results you want.  Oh, and pick up BB's light meter too.   It will help you light your scene correctly and avoid overexposed or very dark renders.

http://www.runtimedna.com/SunLIGHT.html