You want a board with an Intel 945 or 955 chipset.
Something like an Asus P5LD2
. Most other mfgs make them too, but Asus makes some of the best mobos for Intel around.
Oh, you want DDR as well? I don't think its gonna happen. You can get a DDR controller on a mobo with the 915 chipset, but that doesn't support Pentium D. I don't think Intel put the ability to support DDR on the 945 chipset.