I have a dell inspiron 5100 laptop, and i just installed mandrake 9.1 today. During the install I enabled acpi. Ok heres the problem, I have no clue how to configure acpi, it doesnt recognize my battery, and /proc/acpi directory doesnt exist. I tried creating the dir, but i cannot create it.

chkconfig --list acpid: says acpid is on in run levels 3 and 5
and this is the output of acpi -V
acpi -V
Battery 1: unknown, 0%
Thermal 1: ok, 25.0 degrees C
AC Adapter 1: on-line

Can / will anyone help me figure out how to configure this.

su (login as root);
cd /proc
mkdir acpi

This will create the /proc/acpi directory.