Kernel RPM Question

Hi, First off I would like to say how much I enjoy Fedora, and I think it is an awesome distro. The question I have is, how exactly do you configure the kernel to work on other machines in the rpm. Maybe I didn't phrase that right, basically what I mean, is it seems that during the install the kernel does some configuration on-the-fly (maybe I'm wrong) and I was just curious how you configure this one kernel to work on various system setups. Also, what exactly do you need to do to create the rpm of this kernel, do you configure it, then do make rpm, or do you just do make rpm without any configuration to leave a full kernel. Thank you, Casey Price