I doubt you can overclock your system that much.
The system is likely to be hugely unstable when doing such a performance boost on all the parts (not just the cpu).
And , your Athlon musn’t be locked.
I’ve just ordered the MSI K7N2-L motherboard. It doesn’t have IEEE 1394 (and only the deluxe model of the Asustek has that) but has an Nforce2 chipset as well. It’s a little cheaper and it performs better in Tom’s Hardware tests (yes , they overclocked it a bit). It also comes with huge passive cooling elements on the bridges.
I’ve ordered one strip of 512Mb 266MHz DDR , i don’t believe that much in memory enhancements (they never worked in the past and i doubt windows xp will give a huge leap forward).
From what i have seen with my current motherboard (A7V classic with 1.5 Gigabyte of Dimm memory and an Athlon 900) windows doesn’t even USE all that memory , no matter if you disable all paging or not. I’ve only managed to get it over 700 megabytes ONCE , during some huge Paint Shop Pro copy/paste actions. For the rest it stays at 310Meg nominal and 480 Meg max (no matter what game you play).
I hope to upgrade in steps… first put the old Athlon on the MSI and then later on buy a 2400+ or something.