You'll have to buy a new motherboard. Only a few chipsets will work with Conroe (and only one revision of one motherboard based on one of those chipsets is avaliable right now). There will be plenty of motherboard, but only 4 or 5 chipsets.
Stop complaining. Athlon 64s were mostly based on 3 chipsets - NForce 4, nForce 4 SLI, and K8T800Pro. 2 chipsets, if you count both NForces as one.