After Intell mentioned doing this a while back, I've really been itching to try something similar. I recently acquired both an 8600 and a 9600, the last of the grand old days of "big" beige box Macs. With some work, these can be made to run Leopard. I debated about which computer I would use. The 9600 really is the better choice due to its 6 PCI slots and greater RAM capacity, but my 9600 is dual processor and I really want to keep it that way. In any case, I already either already have or have on the way the following parts: 1. G4 upgrade card. This is an absolute necessity, as Leopard must run on a G4. Gamer9430 is very generously giving this to me, and I'm awaiting its arrival. 2. Radeon 9200 PCI Mac edition video card. This is the best video card that will work in OWR Macs, and is actually not a bad performer in Leopard. It lacks Core Image support, which really makes Leopard sing, but will allow me to continue booting into OS 9 with full hardware acceleration(something a Core Image card can not do). I have this on hand-it was in my G4-upgrade B&W, but I'm now using an FX5200(full core image support) in that. 3. Acard AEC-6280M. I'm waiting on this from China. This is a firmware compatible, bootable IDE card that is ATA-133 compliant with big drive support and has two separate IDE buses. I need this for a couple of reasons. 1. Having a DVD drive in a modern version of OSX borders on being a necessity, and there are few, if any, SCSI DVD drives. 2. Leopard is a space hog, and 20gb+ SCSI hard drives can be difficult find and pricey. They are also generally enterprise class 15K drives, which are noisy. The speed advantage is lost on the built-in 10mb/s SCSI bus. Being able to throw in a big IDE hard drive makes things a lot easier. 4. Plenty of IDE hard drives and DVD drives to make all of the above happen. My "shopping list(in due course) includes the following 1. A large amount of RAM. The system has 8 RAM slots, and each can hold a 128mb stick. The 128mb sticks are available for about $10 each. I'll probably also order a few for my 9600. 2. A combo USB 2.0/Firewire card. This is probably not strictly necessary, but will make life a lot easier and should be inexpensive. I need to use a combo card as the computer has 3 PCI slots, and two are already populated with the above components. I'll likely test the one currently in my Quicksilver, and just find the same one if it works okay in the 9600. 3. Both pre-release versions of Leopard. I might have a lead on these, although they are proving to be very elusive. This is unsurprising, as I think there were only a few thousand copies of each made. I need these to extract kexts to make Leopard work. The real work won't get done until after my thesis defense(11 days and counting) and realistically not until after I get it turned into the graduate school(15 days and counting) but should be a fun and relaxing project once I have that monkey off my back.