modules_MAKEDEV?

Hi all, Where I should put modules to be load at the boot time? In "/etc/modules.conf" ? If so, how should put it? For example, I have "sr_mod" enabled(M) in the kernel, and want to put it in "modules.conf", what should I do? Just enter "sr_mod" in a line, or I should add some more command. To me this "modules.conf" is very confusing , since in Gentoo all I need to do was to enter the name of a module in " modules.autoload" . By the way, I can't find "MAKEDEV" command. Do you use the command at all?