Hey,
I've got a 2000 Grand Prix who desperately needs new breaks and rotors...Unfortunately I don't have the car here to look at it, but I was calling around for parts and it appears that the hub and bearing are all one assembly.....Would I be safe in assuming that because it is made like that, that rather than having to screw around with grease and packing, that I can just take the old rotor off and place the new one on?

If that wasn't clear, this website explains how I'm assuming this one can be done as this is how I have done them in the past (different car though)

How to Replace the Rotor in a Pontiac Grand Prix | eHow.com

Thanks,
~Zack