[ACPI-sppt] Is about ACPI install on Dell Inspiron 8500, with Redhat 9

To whom may concern,

I have Dell Inspiron 8500 laptop, running with Redhat
9 and kernel is 2.4.20-20.9.

I download file acpi-20031002-2.4.22.diff.gz and to
install, but I get error message said.

[root@rhlaptop linux-2.4]# gunzip -c acpi*.diff.gz |
patch -p1
patching file Documentation/Configure.help
Hunk #1 FAILED at 18970.
Hunk #2 FAILED at 18991.
Hunk #3 FAILED at 19025.
Hunk #4 FAILED at 19040.
4 out of 4 hunks FAILED -- saving rejects to file
Documentation/Configure.help.rej
patching file Documentation/kernel-parameters.txt
Hunk #1 FAILED at 73.
1 out of 1 hunk FAILED -- saving rejects to file
Documentation/kernel-parameters.txt.rej
patching file MAINTAINERS
Reversed (or previously applied) patch detected! 
Assume -R? [n]
Apply anyway? [n] y
Hunk #1 FAILED at 163.
Hunk #2 succeeded at 235 with fuzz 1 (offset -29
lines).
1 out of 2 hunks FAILED -- saving rejects to file
MAINTAINERS.rej
patching file arch/i386/kernel/Makefile
Hunk #1 FAILED at 38.
1 out of 1 hunk FAILED -- saving rejects to file
arch/i386/kernel/Makefile.rej
can't find file to patch at input line 478
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff -Nru a/arch/i386/kernel/acpi.c
b/arch/i386/kernel/acpi.c
|--- a/arch/i386/kernel/acpi.c  Thu Nov 20 22:35:07
2003
|+++ b/arch/i386/kernel/acpi.c  Thu Nov 20 22:35:07
2003
--------------------------
File to patch:

Not sure if that reall work or not, also I dont know
what to put in of  File to patch: ???? 

I kind of feel that dont want to screw-up my laptop.
If


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