Has any of you tried?
ERMAHGERD
Dude, juse accept that it wont work. There are several things:
1) How are you going to connect the internal display to your new motherboard?
2) How are you going to fit a standard PSU in here?
3) Most if not all modern heatsinks wont fit in there.
4) No motherboards support the layout of the machine.
5) The IO doesn't line up.
6) It just wont work.
If this is the kind of thing you want from a forum I'd suggest instructables, or Overclock.net