FINALLY finished setting it up. Had to get creative to install the 2.5โ€ HD that Galileo Humpkins gave me asd well as the SSD.

Specs

HP Z400
Intel Xeon W3550 3.06GHz Quad Core
8GB DDR3 RAM
NVIDIA FX1800 768mb
128GB SanDisk SSD
250GB Western Digital 7200RPM HD
500GB Seagate 7200RPM HD
320GB Western Digital 7200RPM HD
DVD Burner w/ Lightscribe
6xUSB 2.0 (rear)
2xUSB 3.0 (rear)
3xUSB 2.0 (front)
2xUSB 3.0 (front, sort of)
3.5โ€ Card Reader
Windows 7 64 Enterprise (dual boot)
Windows XP Professional (dual boot)