no offence to hoxlund, but for the computer you're describing you want to build, you don't need the most cutting edge CPU and motherboard.
SLI? what do you need SLI for?
dual core ? what do you need dual core for ?
you can get cheaper CPU and mobo which will be good enough for your needs.
the plus of the Asus mobo is the large offering of SATA ports. anyway i'm sure there are other motherboards that offer plenty of SATA connectors. and in any case i'm not sure it's better than getting a cheaper board and buying a SATA PCI (express?) card. but you'll have to research this stuff yourself and check the costs. maybe the expensive Asus board is
a cheaper solution after all.
in any this is only relevant if you're gonna go with SATA burners of which there isn't a large selection, or use converters.
i haven't read up on hard drives lately, but i'd go with Seagate not Maxtor. they give more warranty. and i don't think 16MB buffer is important for the kind of use you're gonna be making of these HDs. you're gonna be streaming data in and out, not making frequent accesses. so any fast 8MB SATA drive will be good enough. IMO.
as for software, you want to be able to burn 3 different compilations (DVDs) simultaneously. that means runnig 3 instances of the burning program. not all programs can do this. you should check up on the websites of the programs and pehaps contact sales reps to inquire about this and make sure the software can do exactly what you want.
for example, i don't think you can run multiple instances of Nero simultaneously burning different stuff without a special license.
see here: http://www.nero.com/us/Nero_max._7_Reko ... oPage.html
take all my advice with a grain of salt - i'm not a hardware guru (or a computer guru for that matter).
just my 2 cents.