iPC installation problems with hp nc6120

[JoInd]

Hello everybody,
i'm trying to install MacOS 10.5 to my old HP Compaq nc6120 laptop, just to try the "mac system", but i am a complete noob at this so i dont understand most of the things you talk about here.
I'm following this (http://tgrounds.blogspot.com/2009/04/leopard-os-x-1056-on-your-pc.html) installation guide and everything worked (slowly though) until the point quite at the end where the machine restarts and i should press a random key at the Darwin Bootloader and then type -v -f to go to verbose mode and load the kexts. My laptop hangs at a point where is says in yellow letters "Failed to load extension com.apple.driver.AppleACPIPCI.", followed by the seemingly infamous "Stillwaiting for root device."
Have I missed something?? Please help me!
Thanks in advance and a happy new year!

[Imkantus]

We need to know the Southbridge used in your Laptop. Best way to find out would be if you could boot some Linux Live CD like Knoppix Ubuntu - most of them would be OK - and post the output you'll get when you enter "lspci -nn" on the Terminal...

[Tation]

I have the very same laptop. Here is what I get when I run that command.

00:00.0 Host bridge [0600]: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller [8086:2590] (rev 03)
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 03)
00:02.1 Display controller [0380]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2792] (rev 03)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 [8086:2660] (rev 03)
00:1d.0 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 [8086:2658] (rev 03)
00:1d.1 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 [8086:2659] (rev 03)
00:1d.2 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 [8086:265a] (rev 03)
00:1d.3 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 [8086:265b] (rev 03)
00:1d.7 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller [8086:265c] (rev 03)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev d3)
00:1e.2 Multimedia audio controller [0401]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller [8086:266e] (rev 03)
00:1e.3 Modem [0703]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Modem Controller [8086:266d] (rev 03)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge [8086:2641] (rev 03)
00:1f.1 IDE interface [0101]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller [8086:266f] (rev 03)
02:04.0 Network controller [0280]: Intel Corporation PRO/Wireless 2200BG [Calexico2] Network Connection [8086:4220] (rev 05)
02:06.0 CardBus bridge [0607]: Texas Instruments PCIxx21/x515 Cardbus Controller [104c:8031]
02:06.1 CardBus bridge [0607]: Texas Instruments PCIxx21/x515 Cardbus Controller [104c:8031]
02:06.2 FireWire (IEEE 1394) [0c00]: Texas Instruments OHCI Compliant IEEE 1394 Host Controller [104c:8032]
02:06.3 Mass storage controller [0180]: Texas Instruments PCIxx21 Integrated FlashMedia Controller [104c:8033]
02:06.4 SD Host controller [0805]: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller [104c:8034]
02:06.5 Communication controller [0780]: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Smart Card Controller [104c:8035]
02:0e.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5705M_2 Gigabit Ethernet [14e4:165e] (rev 03)

[Imkantus]

Well if that one's HW inforamtion fits, you would seem to be missing a Chipset-driver for Intel (ICHx fixed AppleIntelPIIXATA.kext) - it should be avaible on iPC customization. :)