I am installing lfs, and some of the scripts require to have $rc_base set to /etc/rc.d

do i simply put "export RC_BASE=/etc/rc.d" in my /root/.bash_profile ?

***just in: in /etc/sysconfig/rc there are these lines:

rc_base=/etc/rc.d
rc_functions=$rc_base/init.d/functions
network_devices=/etc/sysconfig/network-devices

**** Does this do what i want ( I presume so )

Also, XF86 is using /root/XF86Config, and I think i want it to use /etc/X11/XF86Config. When i move XF86Config there, x won't start.

Anybody have any suggestions?

You'll need to reconfigure or recompile X as when you move it manually, all the old links to it most likely aren't changed either, thus giving you an error. I would suggest recompiling and installing to the correct directory the first go round.