Brian, That may very well be the case, though I preferred Ozone as a direct plugin within Lightwave. If it IS possible to export animatable sky info from Pro or Infinite to LW, it's still an extra step outside of LW. Most of the time I use stills of skies from VuePro and comp them with our architectural models - but sometimes animated (and volumetric) Ozone skies are preferrable. Then again... if it is the only way possible... AND... if the clouds are as great as Terragen2 looks to be, it may be worth it! :) Megalodon