Wow, so you took an older Mac case and used it. Color me impressed. That's actually not a bad idea, in the end, it sort of IS a Mac (well, it would be if your motherboard and chipset were Intel). But you're still missing my point

lol.
Well, lets have a civil discussion about what makes a Mac a Mac shall we?
Im going to use some comparisons that people already feel are not valid. Hopefully by the time I'm done you will see they are valid.
Lets compare your average Dell machine with your average Apple machine.
The hardware inside should break down to something like this. This is very simplified, but this is how I look at it. Inside every computer you will find these items:
CPU Socket
RAM Slots
Northbridge
Southbridge
IO Ports (USB/FW/e-SATA/PS2/Audio etc)
Expansion slots.
Intel CPU
RAM
GPU
Again, that is very simplified, but you get the point. Now lets break this down.
A Dell has a S775 CPU socket. An Apple machine has a S775 CPU socket.
A Dell has RAM slots. An Apple machine has RAM slots.
A Dell uses an Intel supplied Northbridge. An Apple machine uses an Intel supplied Northbridge.
A Dell uses an Intel supplied Southbridge. An Apple machine uses an Intel supplied Southbridge.
A Dell has Expansion Slots. Some Apple machines have expansion slots.
A Dell machine has IO ports. Apple machines have... You guessed it IO ports as well.
Some/most Dells use Intel CPUs. Apple Uses Intel CPUs.
Dell Uses DDR spec RAM. Apple uses DDR spec RAM.
Dell uses Intel GMA/Nvidia/ATI GPUs. Apple uses Intel GMA/Nvidia/ATI GPUs.
So, What do you get from that? The vast majority of the hardware seems the same to me. So what is it that makes a Mac a Mac? Ahh... OS X. But as its already been stated, that too can run on a Dell. After all, Its OpenBSD with a pretty window manager overtop.
So really.. The only things that I can come up with as to what makes a Mac a Mac is.... 1) The Apple logo on the outside. Once it receives that Apple logo it magically ceases to be a PC, even though it still uses generic PC hardware. 2) TPM.
Maybe its more than that. Maybe its a status thing that makes a Mac a Mac. Maybe its the Premium price tag. Maybe its that your buying into a "community". Maybe its some VERY brilliant marketing. IMHO the difference went away when Intel hardware was brought into the picture.
Anyone care to debate this with me? Im not putting this out as flame bate, I just wanna have a real conversation about this!