|"...i am still too much of an ameteur."|
All of us were at one time.
At the very least you're trying to learn, which is more than I can say for some who have posted here.
By the way, sometimes the mboard's bios allows you to set custom setings for the cpu, sometimes it doesn't, and by default the bios uses the standard core mhz and multiplier for the cpu type. Most XP cpus will overclock easily (if you can change the multiplier) , at least somewhat, if you can specify custom settings. Usually it's not a good idea to set the cpu core voltage higher than standard - the performance increase is negligable and the cpu definately runs hotter all the time.
"What are the highlighted part numbers that are in the chart?"
The AMD cpu part number - that's printed on the surface of the cpu itself.
If an ad does not state that, don't buy it.
Make sure the ad says the cpu has been tested. Some vendors have a DOA (dead on arrival) buyers policy - if it doesn't work you can arrange to get it replaced - some are at your own risk.
The ones with yellow behind them may or may not work - they're probably mobile cpu part numbers.
Clicking on the part number shows you the specific specs.
So - it appears your mboard model can use the 333mhz core (Barton) cpus, no problem, and the bios version is not a problem.
NOTE that you probably must have all 333mhz ram installed to support the 333mhz cpus. See your mboard manual.
You should also check here -
Latest cpu support list