Thanks AgentSmith, I have already seen that app, I coulnt figure it out..confused:

as for the Ivy Generator, i havnet had time to play with it much yet, but Its really impressive !
I doubt he realises it yet, but Thomas Luft (the creator) could make some money out of this, it is quite remarkable app, and could be improved furher or incorporated into a big app like bryce, Vue etc. I would imagine they'd be VERY interested, as the response from just  the renderosity community is already good !