QUOTE (thefirelane @ Jun 6 2008, 11:46 am)

Just out of curiosity, what hardware does Apple restrict you from using?
Well, the newest high-end graphics cards for starters. Even the last gen cards can't be used. In order to use any Graphics
or storage cards (SAS/SATA/SCSI) in a Mac, the cards require a different BIOS than what is normally put on the cards for use in Normal PC's.
THis is required due to the MAC's using EFI, and not standard BIOS. Some of the PC standard cards can be used in a MAC, but will only be
seen/used if you boot into windows. In theory any PCI/PCIe card can be used in a MAC, but the problem comes down to the EFI Bios code on the cards
or a total lack of drivers either from the company, or built-into OSX.
Cards that do have the MAC EFI BIOS, tend to be older cards and cost much more than the current model (faster) cards.
Network cards also have issues with OSX, unless their natively supported. There are only a hand full of cards which are supported
by OSX (Both wired and wireless), So if your thinking adding any old NIC to a Mac.. Think Again.
Just for S-N-G I installed OSX Leopard on my Tower PC. Everything works just fine.. Network (Wired), Bluetooth, Audio and Graphics (Dual Monitor).
There are no freezes and no sluggishness. It all comes down to what hardware you have installed. The entire install took about 30min.
The best hardware to use when building a Hackintosh are:
CPU: Core2Duo
Mainboard: Intel Mainboards work best.
Graphics: Most ATI and Nvidia cards are supported, but don't waste your $ on the super new $$$ ones. a 6800 GT will work just fine.
Network (Wired): Intel chipset based Gigabit NICs
Network (WLAN): Broadcom BC41xx or Dell Truemobile cards
Audio: AC97 based cards based on Sigmatel, Nvidia or Intel chipsets.
Stick to these specs, and OSX will fly. Use the EFI Emulator avail. on the net and you can install OSX from the Orig. Apple DVDs
and even use the Software Update Service to stay updated.
@Iain & Siobhan
What work are you trying to do? Every application Adobe makes is avail for Mac. Microsoft has office 2008 For mac. Plus there are tons of other titles avail.