Thanks Stefan. I have actually discovered after lots of experimentation, that I prefer the Cinema4D way of doing it. It lets you select a single polygon at a time, or a polygon group or area. It then evaluates the angle, and if removing the vertex to make two triangles a quad will result in a non-planar polygon, then it doesn't untriangulate that section. The problem I had with Lightwave is that I am using Lightwave 8 and the plug-ins were only for 5, 6 and 7. I managed to drop the polygon count on my test model from 60 000 to 35 000 without any loss of detail using Cinema 4D. Thanks for all the help from anyone.

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