Hi fellow D250 owners.
Following this thread I did this:
Upon boot, keyboard and touchpad work...(Note: in iDeneb 1.5 they don't)
At the Darwin screen>select your language
From the menu select disk utilities>partition and choose where you want to install OSX and format it as mac os extended (journaled). I always name mine with a single short word like OSX as this makes life easier when you are in Terminal =)
Quit the disk utility.
Select the target disk
* Patches 10.5.6 ready
* Alternate Essential Patch
ACPI kext 10.5.6
* PS2 Fix for ACPI kext 10.5.6
PS2 Fix Mouse
Apple Azalia Audio
Kernel 9.5.0 Voodoo
* System Utilities
Skip disk checking
Once the installation is complete, at the darwin boot screen, hit space and enter -f.
First time it booted it stalled after the selection of the user picture so I rebooted. Next time it rebooted fine and has done so ever since.
Install GMA950 package which Colonel uploaded (double click) reboot
Install osx86tools, run and enable quartz - reboot
Open osx86tools again and select boot flags. The line already has:
cpus=1 make it cpus=1 ForceWake=y
At this point the ethernet doesn't work. I am not aware of *any* working driver for the Attansic chip (1969:1062) so that is why I didn't install one at the customize menu. So got a Linksys USB200M for $10 from ebay. Setup network automatically. I also added the USBAx8817x_103b11 kext package. Ethernet now runs OK but it is not as fast as the built in one (max throughput approx. 200kBs).
So at this point in the installation: USB works at HiSpeed, ethernet works, screen 1024x600 quartz, sound works, keyboard works, touchpad and some gestures work (like double click), battery monitor works.
What doesn't work - mic, video camera, ethernet port, (not sure about the card reader).
I am confident that the mic, and video camera can be solved with the voodoo kexts but haven't had time to try them yet (voodooHDA). I would love the ethernet to work but I think we may never get a driver for it (unless Reader02 is reading this thread).
The alternative distro for the D250 is iAtkos v7. This one works *really* well. The problem I had was USB speed...just couldn't get it above FullSpeed 1.1. But video worked and I think the mic, full touchpad gestures (voodoo), sound (with voodooHDA), kernel 9.7 and it was 10.5.7.
Hope this helps someone.