With all your help and input, I've come up with this system. I plan on upgrading another video card in a few months and the CPU in 6 months or so, when prices drop. Looking at adding a SDD sometime next year as well!
Minus the Software, I paid 1400 dollars with the current conversion rate. This includes 3 year warranty on all parts.

RAM: 8192MB-Quad-Kit GEIL Black Dragon PC2-6400 DDR2-800 CL4
PSU: Aerocool HorsePower - 1020Watt
MB: EVGA nForce 780i SLI, ATX, 775, DDR2
CPU: Intel Core 2 Quad Q6600 boxed, 8192Kb, LGA775, 64bit, Kentsfield <<< NOT MY FIRST CHOICE BUT I WANTED TO KEEP COST DOWN, DIFFERENT MB, POWER SUPPLY AND HD!!
DVD: LG GH22NS30 bare schwarz SATA II
VIDEO: MSI N260GTX-T2D896-OC, 896MB, GDDR3, PCI-Express
CASE: 203NZM NZXT Tempest, ATX, ohne Netzteil
WINDOWS 64BIT VISTA ULTIMATE
RAID 0 CONFIG:
HD: WD Caviar SE16 320GB SATA II 16MB
HD: WD Caviar SE16 320GB SATA II 16MB