The DS is as much a portable N64 as the PSP is a portable PS2 and the GBA being a portable Super Nintendo.
If anything, I'd more expect this Quake3 thing to be more like a Quake2 port with a Quake3 look thrown into it. There's still absolutely no way that I could ever see the Quake3 engine running on the DS. It uses complex shaders under OpenGL, the DS doesn't support that. Quake2 on the other hand uses both OpenGL and software based rendering so is therefore more likely what would be used.
07/08/2007
MyPSP - South Coast, NSW