The french translation of http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=7 is outdated. In "7.e. Kernel Modules", it advises the reader to use "/etc/modules.autoload.d/kernel-2.6" instead of "/etc/conf.d/modules". If nobody steps up for this, i'm willing to update the whole page according to the English manual.
FR version updated (this was a minor update), thanks for reporting :)