Building a high performance PC

First wise question may be what do you need your PC for? More gaming or productivity - because the configuration can go in price alooooot if both are considered (it may go over 2-3k eu if you want MONSTRUM) with 4 graphic cards latest cpu, and bullet proof motherboard.

So tell what do you want from your computer first  

Is this PC going to be "high performance" for gaming or other tasks? Please specify what it's going to be for, from most important to least... Also, you've not mentioned a monitor, please let us know if you already have one and what kind it is.

Try to give us a ballpark of what you are willing to spend and what country you will be buying from...

Since no one has linked it yet, this is the preferred format to post in:

How to Ask for New Build Advice

It really doesn't need to be high performance. I just want to be able to downlaod music and play black ops on it. My monitor is the Hanns:G HZ194APB Black with speakers. I'd like to keep it under $1500.00 and will be buying from the USA

PSU / Video Card # 1 Combo
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

Video Card # 2 / Operating System Combo
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

Case
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU / Heatsink-Fan
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

RAM
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Monitor
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

DVD
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Total = $1,374.87 after Mail-in-Rebates, I did not include shipping
All quality parts that will last some time. You can add an SSD if you want as well.
You will not need a sound card as the integrated sound on the motherboard is more than enough, same goes for the network card.
I added a 24-inch monitor as well because the one you have is small-ish and black-ops will look much better on the one i suggested.

AMD AthlonII Processor $73.99
EEVGA )!G-P3-1452-TR GeForce GTS 450 Video Card $199.00
MSI 880GM-E43 AM3 AMD 880G Micro ATX Motherboard $79.99
Samsung Spinpoint F3 HD502HJ Internal Hard Drive $54.99
Corsair CMPSU-550VX 550W ATX Power Supply $69.99
Mushkin Enhanced Essentials 4GB Dual Channel Memory Kit $49.99
Cooler Master Elit RC-330-KKN1-GP Black PC Case $39.99
Lit-on iHAS 124 OEM 24xDVD+R burner $20.00
Display – Hanns:G HZ194APB Black with speakers $99.99
Keyboard and mouse-Apevia K1-Combo $24.99
All of these parts were purchased from Newegg.com
Operating system- Windows 7 Premium Family with
Free Cisco Wireless Router $149.99
Microsoft $119.99
These were both purchased from Micrsoft.com
Total cost for my system $982.90
This is what I came up with. It's not high performance but it will do what I need. Thanks

why are you paying more for a GTS 450 video card when you could be paying less for a GTX 460?

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
= $189.99 and with $35.00 rebate, it's only $154.99