Finally finished putting my new machine together a couple weeks ago. I've been really busy, but I wanted to report back on what I built and my results.
1. Abit NV7-133R nForce board with RAID, built-in sound, built-in ethernet.
2. MSI GeForce 4 Ti4200 128 MB
3. Enermax 350w PS.
4. Cheap case but with coolio front-mount ports for headset and USB.
5. 4 USB 1.1 and 2 USB 2.0 ports.
6. Athlon XP 1800+ and a cheap heatsink/fan.
7. 512 MB Crucial PC2100
8. Windows XP Pro.
Well, I did my homework before I built this one, and it paid off. I made myself a bootable CD with updated BIOS and a BIOS flash utility, nForce drivers, and several versions of nVidia Detonator drivers for the video. I also burned various patches and utilities onto the CD so I would have everything I needed. I put the IDE 133 RAID drivers on the CD that Windows XP would need during setup as well. I double-checked the documentation to confirm the BIOS flashing process, and noted it wanted me to clear the CMOS after I flashed it. Cool.
Well, I carefully assembled the RAM and the CPU onto the mainboard first. I used Arctic Silver III and followed their very thorough instructions. Then I bolted everything else into the case, and put the mobo in it carefully. Hooked it all up according to the very good manual (Abit's manuals are much better lately I find!) and I fired it up. I hit BIOS immediately, and set it to boot from the CD. Saved, and booted, the CD loaded up. I flashed the BIOS, shut down, cleared the CMOS with the jumper, and then fired the XP disk in the CD drive and started it up. XP came up, I loaded the Ultra-ATA 133 drivers, and installed XP. Sweet.
Well, to make a long story short, everything went completely perfectly. I'm shocked. This has never happened before. I always have SOME little issue to curse about. My wife couldn't believe it.

AH now runs at 4x FSAA 1024x768 32 bit and sits at the 85 FPS that matches the refresh rate of my toejamty 17" monitor. Me=happy. After my last build with a VIA based KA7-100 and lots of problems with it, my next machine will probably be an nForce 2 or nForce 3.

I would reccomend this setup to anyone.