I understand Dinaars' problem, and he doesn't deserve the harsh and biting criticism he's getting (then again, I shouldn't forget what forum this is).
If the design problem were to design a hub in a requirements vacuum, then no problem. In that case, it truly is an easy problem and any engineer worth his salt (or future salt if he's a student) should come up with an answer easily.
But we live in the real world where such a design is constrained by convention, arbitrary historical precedent, and the interactions with other components. If the guy needs info on thread sizes so his hub will take standard axle nuts and cogs, it's an acceptable question. If he needs inner diameters so he can use off-the-shelf bearings (a valid design choice), then so be it. Those kinds of things are important if he ever plans to put this hub on a bike that won't also have to be design from the ground up.
Sorry I don't have your answers...but ignore the surly members of our "community" and keep working at it.
-- Another Engineer