There will never be a dual P4 board. If you want the closest thing the Xeon will do it. Be prepared to spends some money though. They use a socket 603 (603 pins), have 512k cache, hyperthreading (appear as 2 logical CPUs to the OS) and cost a bit more than the standard P4 for the low speed ones. A lot more for the fastest ones. There are no 533FSB Xeons...yet.
The only overclocking option there is would be the Iwill DP400 like fishy said. That board has a hidden option to run the as yet unreleased 533FSB Xeon chips. To overclock it, you need to do some soldering to trick it's onboard clock generator to send a 133mhz signal to the CPUs. If I remember correctly a member here, rileydog, has his 2.2 Prestonias running at 2950mhz. Talk about a fast system.
But...this board has no voltage tweaks or anything to speak of in BIOS. No Xeon boards do. They're meant for servers and workstations, not enthusiasts that like to tweak.