> After making a model in Milkshape, how do merge them into existing .brres files?
It is messy, email it to me and I'll take a look (no promises)

Be warned, my first comment will probably be: that's way too complex, reduce the number of polygons by X times (where X may be 2 or 20). To their credit, the Nintendo 3D modellers did a good job optimizing their models (also using efficient triangle strips). This makes the items smaller, and easier for the 3D engine in the Wii to render.