I don't think it's that hard.

It's just time consuming. It's not like the new stuff where you stroke a couple keys in the bios and you're done. You have to work each chip you OC within there own personality's. They all like different things.
It's mostly in the combination of components you put together. This is where doing your homework pays off. I'll try to condense it a little to get you started.
First, the boards you'll want to look for are AN7, NF7(S), DFI Ultra B, Epox 8RDA. Any of those boards will provide the high FSB you're gonna need. Second, start looking for ram right now. 1 gig or less kits with timings of 2-2-2-x. BH-5 or TCCD chips are what you want to look for. Ram is critical for socket A's because you NEVER, EVER, want to run anything other than a 1:1 ratio. It just kills performance.
Third, a good high performance modded bios for whatever board you wind up with. Fortunately for you, you know somebody with a modded bios library a few hundred deep for most boards on most older platforms. Who, you ask?.......That would be me.

Fourth is a tip: Less multi and more FSB is always better. Tighter timings are always better.
Put something together and give it a shot. I'll help you. Rick tried socket A, ask him how it went. It's not as easy as everybody thinks. Definitely more satisfying than my newer platforms.
I'll answer any questions you might have......or at least try to. You guys are always welcome to come to CP for pointers. I'll take care of you.