However I am sacrificing the speed of my athlon 1700+ XP.

I have one 512mb and one 128mb 133 sdram.
I would like to keep these as buying new rimms will cost me big time.
I would aslo like a board with relyable built in ethernet that doesn't use the pci bus, if possible.
Also I would like to overclock the p4 to make up for speed loses.
Can anyone recommend a board for me?