hi there,
that's my first post, so: hi .
i just read the threads related to external level editors and somehow i could not find the best open source 3d tool there: blender (apologize the advertising sound of this, i'm working on/with it for years ). blender exports to dxf and vrml and it should be easy to convert these to a format irrlicht knows.
corban
ps:some personl things: i'm a c++ coder and interested in doing 3d things (mostly openGL so far) and i started using irrlicht for a simple reason: it is really usable. most other engines (eg crystalspace) are that complicated that coding openGL directly and adding some ODE stuff takes the same effort as using the engine. but i want to focus game CONTENT creation like cool models and stories and it seems i've found what i was looking for.