Well, the stable kernel.org release is
not the same as "stable distribution release". The distro kernel is heavily patched compared to the kernel.org version, adding the distro-specific hooks and stuff...
I don't know what Google search tells you about installing custom kernels on RH...
But you can use zen-kernel.org kernel, following
this guide. Read more on that page, the process is staightforward and you end up with a kernel fully compatible with your distro (at least mine, v3.2.2, builds and boots seamlessly on
Fedora).
This approach may or may not work when using kernel.org source, but I never tried
.
Hope some of these tips will help...