Would it be possible to convert a .WDR model to .DFF, and lower the number of vertices (i.e. take a whole building from IV and make draw a cuboid layer around the whole model, avoiding windows etc.) http://forum.zmodeler3.com/viewtopic.php?f=11&t=5658 ^ooh... If you'd like a strong, willing leader with no experience whatsoever on this project- I'm your man!