Any of the PT800 chipset boards are inexpensive. The Abit VI7 is what I got, and I'm pretty satisfied with it. The onboard audio was hissy, so I put my SB Live! in it, and the memory needed to be boosted from 2.60 volts default up to 2.65 to get the tight timings (2-3-6-3) at DDR400 (I have PC3200 RAM). I'll fiddle with overclocking some other time, but it's not really the OC king board since there are only a limited amount of choices for voltages.
I got my board at Fry's in a combo with a 2.8 GHz P4, for $279, but standard normal price on it's own the VI7 is $70
I got my board at Fry's in a combo with a 2.8 GHz P4, for $279, but standard normal price on it's own the VI7 is $70