Supposedly the DirectX SDK includes functions to simplify a mesh in 5 lines of C# code:
http://msdn.microsoft.com/library/de...plifyamesh.asp
I could probably whip up a quick program to simplify your DoGA models for you... the only problem would be that the REASON that DoGA's models are so triangle-intensive is that they have many useless triangles, i.e. triangles in one Lego part that are inside another Lego part. I doubt DirectX can take care of those automatically, but it can at least reduce the polygon count of your models... at a significant loss in quality, of course...
What you REALLY need is a modeller with CSG - that's Constructive Solid Geometry - on triangle meshes. That will take care of getting rid of those useless interior trangles.
How about Silo? It's not free like Wings (it's $109, which is still pretty cheap for what you get), but it has a similar interface to Wings, and it supports CSG as well as a couple other handy features which Wings lacks. Think of it as Wings on steroids
There's also a free Version, but that limits you to 100 polygons, which doesn't even cover the default sphere, so that's probably out of the question. You can check out a 17-day demo at
www.nevercenter.com... hmm, I think I just might bring up Silo if anyone still needs Christmas gift ideas for me
The only real complaint I have about Silo is the lack of options for texture mapping, but there are dedicated programs like LithUnwrap which can take care of that