Is this a good configuration for a computer?

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CD Drives
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Sony Black 52x32x52x16 Combo Drive, Model CRX320E Black, OEM
Item# N82E16827106819
$39.99
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Sony Internal 16X DVD+/-RW / Double Layer Drive Black, Model DW-D22A-B2, OEM
Item# N82E16827131241
$60.99
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Memory (System Memory)
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Crucial Ballistix 240-Pin 512MB DDR2 PC2-4200, Model BL6464AA53V - OEM
Item# N82E16820145072
$176.23
Quantity: 2
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Processors
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Intel LGA 775 Pentium 4 540 3.2 GHz, 800MHz FSB, 1MB L2 Cache w/ Hyper Threading Technology - Retail
Item# N82E16819116183
Core: Prescott**
$220.00
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Video Cards
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BFG nVIDIA GeForce 6800 Ultra Video Card, 256MB GDDR3, 256-Bit, TV-Out/Dual DVI, 8X AGP, Model "BFGR68256UOC" -OEM
Item# N82E16814143021
Status: In Stock

$539.50
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D925XEBC2 <-- Intel Motherboard

Est. $220
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This is what I have so far for my computer. I have a couple of questions:

1. Is this a good configuration?
2. What kind of case should I get (need an idea for fans and power supply)?
3. What other things do you reccomend (artic silver/thermal grease)
4. What kind of a floppy drive should I get?
5. Are there any changes I should make?
6. Do you trust http://newegg.com enough to tell me to buy it off of their site?
7. Do you trust Prescott cores for processors? If you dont, what core do you recommend?
8. Do you know of a big heatsink that is really quiet?

(BTW I don't need a hard drive, mouse speakers, keyboard, moniter, etc... This is only for the computer itself.)

 

I don't know much about Intel procs or DDR2 Ram, although I can say, I trust NewEgg, I've bought my processor and video card there, and I'm satisfied with their service.

 

make sure you have a descent PSU ... like Antec PC Power & Cooling ... others on this board have made recommendations .. so do a search ... most questions like this have already beena answered