Need some help with getting a new PC.

[Rickz0r]

My budget is 1200 euro's. With that money I can get the following PC:

Processor: i7 920 - 4 x 2,66 GHz

RAM:        6 GB DDR3 1333 MHz

HD:          2000 GB - SATA II - 32 MB

Graphics:    ATI Radeon HD5850 1 GB DDR5                   

                   Blu-Ray / Double Layer Dvd (Re)Writer

                   Vista Ultimate 64 bit

With a nice case, alot of output and input and ofcourse 2 years of full warranty. With alot of parts having individual warranty aswell. Would it be better to build my own PC? And if so, could you please list the Head components (Motherboard, Graphics Card, Processor, Case, RAM) with a budget around 1200 euro's.

Thank you in advance.