Just finished building mine, here is some pics and specs...
i am in the process of pre-clearing all the drives then i will hopefully get the unraid up and running to start copying over data. with the antec 1200 case i had to break out the tabs that normally supported the 5.25" drives but that was pretty easy by taking a pair of small vise grips then just moving it back and forth and it broke off pretty clean. one slick thing about the supermicro board is that it has a usb header directly on the board so you can plug in your flash drive directly on the board and not have it dangling outside of the case to be accidentally hit and break it...
Case: Antec 1200
Motherboard: Supermicro X7SBE-O
KVM/IP: Supermicro SIM1U+
CPU: Intel E5300 2.6Mhz Dual Core
Memory: 4x Kingston KVR800D2E5/1G
PSU: Thermaltake Toughpower XT W0229RU 750W
SATA Controllers: 2x AOC-SASLP-MV8
Drive Cages: 4x Supermicro CSE-M35T-1B
Drives: 2x WD20EADS & 2x WD20EARS (more on the way )
USB Flashdrive: 2x Lexar JumpDrive FireFly 4GB