Sal: The kernel pkg script makes the modules. The dpkg -i kernel-image (etc) installs the modules--and warns you to mv any old modules.
No make_install_modules is necessary with the kpg script. I tried to install the 2.3.4 kernel from ftp.kernel.org. My system booted but fluttered, so I stuck with debianised kernels. Others, apparently, have had no problem with the later undebianized kernels. The other stuff you ask I don't know. Eric