Well, here's my specs and my settings. I'm fairly happy with the results, but it seems like other people here are doing much better. Please feel free to offer any advice!

Board: MSI K8N Neo2
CPU: A64 3500+
Memory: XMS-PC3500C2 Rev1.1 (2-3-3-7-1T) --chip--> Winbond BH-5 2x512 in slot 3&4
Video Card: Ati Radeon 9700 Pro
HDD: WD Raptor 36Gb on SATA port 1
Sound Card: Soundblaster Audigy 2
Power Supply: Antec Truepower 430

BIOS VERSION = 1.50
Cell Menu-->
Memory Submenu --> 200Mhz, 1T, 2, 3, 8, 3
Cell Menu-> shift+F2 then Alt+F3 -->
Hiperf = manual
agp drive = disabled
speedup = disable
Dram Strength = normal
spread-spec = disabled
HTT = 4x
Mult = 11x
FSB = 228
agp = 67
vcore = 1.425
vid = 0%
vdimm = 2.85
agp =1.65

Notes: Increasing the CPU voltage seems to make thing more unstable for me. As far as dropping down the multiplier to 10.5x or 10x, that doesn't allow me to reach as high of CPU MHz at a 1:1 memory ratio, but I can get the FSB up to around 238 (again at a 1:1 memory ratio.)