I just put one in an ASUS P4C800E Deluxe and have had no problems. It's been loaded w/XP Pro and I am trying to break it before activating the OS. I have put 2 other P4 (Northwood cores) into ASUS P4 series cards and no problems yet. I can vouch for these boards if they have the features you like. I stay away from their on board sound, however. The network interface works well.
i just bought a p4 ht 800fsb....
http://processorfinder.intel.com/scripts/details.asp?sSpec=SL6WU&ProcFam=483&PkgType=ALL&SysBusSpd=ALL&CorSpd=ALL
I'm looking a msi or asus board for it, but im kinda lost. Any suggestions? Even links would be appriciated...
Thanks
Eric

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