Network Storage

Basically, I want to buy a some pieces to build myself a network storage computer in the near future. I'll follow the "How to ask for advice" guide to make everything more easy to read

APPROXIMATE PURCHASE DATE:
In the near future.

BUDGET RANGE:
Around €400, but I don't mind spending a bit more if there is a good reason for it.

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT:
File sharing. Obviously, this system would sit around doing nothing most of the time. Perhaps I might make it run Folding@Home.

PARTS NOT REQUIRED:

• 550W Power supply -- it might be a bit overkill, but it's the only one I've got lying around.
• 3 x 1TB Samsung hard drives (HD103UJ)
• a case
• A screen, keyboard and mouse

PREFERRED WEBSITE(S) FOR PARTS:
Unless there's a site with cheaper prices, I'd be buying my stuff from www.alternate.be. As this shop is reasonably close to my home, I could pick up the parts myself.

PARTS PREFERENCES:
Motherboard:

• RAID 5
• onboard graphics.
• Preferably socket 775, but AM2+/AM3 is fine as well.
• Alternate.be only has these brands available: ASRock, Asus, EVGA, Foxconn, GigaByte, MSI, XFX

Processor:

• Whatever fits the motherboard and does the job.

Memory:

• 2GB of whatever fits the motherboard and does the job.

Harddrives:

• 3 x 1TB Samsung hard drives (HD103UJ)

OVERCLOCKING:
No.

SLI OR CROSSFIRE:
No.

MONITOR RESOLUTION:
Irrelevant.

ADDITIONAL COMMENTS:

• Quiet. This PC might end up in my bedroom. This might involve buying a new PSU after all.
• Low power.
• 6 x 1TB hard drives in RAID 5: Is this a good idea?
• It would be nice if the motherboard is a socket 775, but I've noticed it's hard to find a socket 775 motherboard with RAID 5 and onboard graphics.

for the 6x1TB i would recommend spending money and getting an 8 port RAID card (something decent aka adaptec would be great but very expensive)

i used:
Asus M4A785TD-M EVO
AMD Athlon II X2 245
Geheugen 2x1GB DDR3-1333 Kit
3x1TB Samsung HD
came to €402

High Point Rocket RAID 2320
http://translate.google.com/transl [...] ry_state0=
though this part is €299

Hmm... Ofcourse it wont fit on my old P4, it doesn't have a PCIe slot.
My 939 computer has several PCIe slots, but power efficiency is not one of its best areas I guess it could do though.