Disclaimer: I am not an expert, most of this was figured out by trial and error. I will try and help you if you need it, but most of what I learned came from Google.
Install guide for Dell XPS1530 (I am not going to go too far into detail, but I will tell you what you NEED to know. Anything further and to be honest I am probably not sure...)
1)Prerequisites
Get the following files downloaded (and burned to CD or DVD)
-- iAtkos 1.0r2 DVD
-- Kalyway 10.5.2 ComboUpdate pack
-- Ubuntu 8.04 Desktop Live CD
then get any data that is on the computer now off the drive.
2) Partition
Put in the Ubuntu Live CD and boot to it.
Start the Partition Editor by typing
sudo gparted
in terminal.
Delete all the partitions from the disk.
Set up the partitions I used the following setup:
15 GB NTFS (for windows)
15 GB unformatted (for macOS)
Crete new Extended Partition
1 GB linux-swap
14 GB ext3 (for Ubuntu)
the rest to storage (FAT32) can do that now or later.
Apply changes.
Close GPARTED
Shutdown computer (it will eject the CD)
3) Install Vista (or XP)
Install to the first partition, should show up first on the drives screen. No special instructions
4)Install Ubuntu
Once Windows is all set up put the Ubuntu CD in and restart
When you get to the desktop use "Install"
Most of the install options dont matter, but when it asks you about partitioning say Manual. set the ext3 Mount point to / and the linux-swap to swap.
Go through Ubuntu install.
Ubuntu Installer should set up and configure Grub for you, so that you can go to Ubuntu or windows.
5) install OS X
Once Ubuntu setup is done, verify the boot loader works for windows and Ubuntu
then insert the Mac OS DVD, and reboot
Click next at the "Click to continue" screen.
Go to Utilities->Disk Utility at the top
Select the partition for MacOS (should be the 15GB that has almost all space free)
Select "Erase"
Change File system to "Mac Os Extended Journaled"
Erase
close disk utility
coninue the installer until you get the customize button.
When you get to the screen that gives you the customize option, click it
Expand bootloades and click the box next to "Darwin EFI" to select everything under it.
Expand drivers->system->there is a kext (I think APPLESMBIOS) select that
SELECT NOTHING ELSE!
Continue the installer, it will not take too long, but may appear to have frozen.
After the installer finishes it will reboot. Mine then opened the Grub bootloader --> make sure to go into windows not ubuntu, if you let it get to ubuntu, just restart again
6)Bootloader
Download EasyBCD
Install and run it
Go to add entries and add one for MacOS and one for ubuntu, i Called mine OSX
Add another entry for Ubunto for easier boot later
7) Get into MacOs
Reboot, and select the GRUB option for windows
this will then bring up the menu that should have Windows and OSX on it, and Ubuntu if you added that to the list
Select OSX
8) Once you get in to MacOS use the comboupdate to update to 10.5.2
When that is finished, go to http://scottdangel.com/blog/?p=23 and get the installer for the NVIDIA card.
Run the installer (top and bottom boxes checked) and enjoy your MacOs with everything but sound...