[NTLUG:Discuss] need hardware config recommendations

[ntlug@levelofdetail.com]

NTLUG,

I want to build a good, fast new desktop system for general home use.
I've done a couple so far, but this one would be a little different. I
plan to install Fedora Core 3 on it. I'm looking at these components
(with newegg.com links):

---
motherboard

ASUS A7N8X-E Deluxe Socket A (Socket 462) NVIDIA nForce2 Ultra 400 ATX
AMD Motherboard

http://www.newegg.com/product/product.asp?item=N82E16813131478

---

processor

AMD Athlon XP 3000+ Barton 333MHz FSB 512KB L2 Cache Socket A Processor

http://www.newegg.com/product/product.asp?item=N82E16819103381

---
HD (2)

Seagate Barracuda 7200.7 SATA NCQ ST380017AS 80GB 7200 RPM 8MB Cache
Serial ATA150 Hard Drive

http://www.newegg.com/product/product.asp?item=N82E16822148040

---

Video

ASUS EAX700-X/TD/128M Radeon X700 128MB 128-bit DDR PCI-Express x16
Video Card

http://www.newegg.com/product/product.asp?item=N82E16814121540

OR

XFX Geforce FX5200 256MB DDR PCI Video Card

http://www.newegg.com/product/product.asp?item=N82E16814150061

OR

ASUS EN6600/TD/256 Geforce 6600 256MB 128-bit DDR PCI-Express x16 Video
Card

http://www.newegg.com/product/product.asp?item=N82E16814121179

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I'm especially shaky regarding the video cards. What should I look for?
Is video through PCI always faster than AGP? Are PCI and PCI Express
compatible with each other and compatible with Linux?

Regarding the hard drives, I've done Ultra ATA drives before but want to
do Serial ATA this time. I assume it's a simple 1-to-1 cable connect (no
master-slave) and there are no extra steps with building or installing
on them.

Thanks for any guidance,

Ed