The only thing apart manual / notepad editing is use 3dsmax, but this is where it gets complicated. There are two exporters:1) Gabriel Interactive's official exporter, a .dlu plugin, which will ONLY work on 3dsmax v4/v5 + The Havok Exporter (reactor doesn't cut it).2) A MaxScript exporter, originally written by dummee, modified countless times, my copy is floating around somewhere, and as far as I rembber it works with all the versions, but is much more complicated to use.If I were you, I'd go with Max v5, The Havok Exporter and the official plugin, but beware, v5 is broken on Windows XP SP2 or newer, and a lot of things don't work, including named selections, render to texture, and others. So be use to use SP1 or prior, or otherwise you may just stick to a newer revision + MaxScript.
Hmmm. I guess I'm stuck with the newer revision. I'll be downloading 3DS Max 8. Or 9.By the way, wasn't you making some sort of hierarchy based GMF editor, with 3D modeller built in? That's how I saw it..