rc.conf equivalence in debian?

[3molo]

Hi.
In order to install "somedaemon" with chrooted environment, I need to insert the following into /etc/rc.conf;

devfs_set_rulesets="/somedaemon/dev/=devfsrules_somedaemon"

/etc/init.d/mountvirtfs seems to be the place, but it wont understand "devfs_set_rulesets", obviously. Can anyone explain how to do this?
Running debian sarge, 2.4-27 generic kernel. No udev.

Thanks in advance,

~3molo