Adding another ATA HDD

Computer Type: PC/Desktop
System Manufacturer/Model Number: GIGABYTE Rig (Custom)
OS: Windows 7 Professional (x64/SP1) /Linux Mint 16
CPU: Intel i5-3570k 3.40 GHz @ 4.6 GHz
Motherboard: GIGABYTE Z77X-D3H
Memory: 8GB (2133MHz) DDR3
Graphics Card: Asus GTX560 Ti (Nvidia)
Monitor(s) Displays: HP 23", Acer 19" and a Dell 17"
Screen Resolution: 1080p, 1440x900 and 1280x1024
Keyboard: Steelseries 6Gv2
Mouse: Roccat LUA
PSU: Antec 620w High Current Gamer
Case: Corsair Obsidian 600D
Cooling: CPU - Antec KÜHLER H₂O 920
Hard Drives: Sandisk Extreme 120GB (SSD), WD 2TB green and 4 other HDDs
Internet Speed: 4 - 6mb/s
Browser: Chrome/Firefox
Antivirus: ESET NOD32
Other Info: Intel Gigabit CT (PCIE NIC) and Thinkpad T61p,