I'd farm it out...
4 Full racks of 32proc systems running Server2003 Data Center w/ Terabytes of HDD space hundreds of GB of RAM. and some 8mb ATI Video card (its a server don't need more :P) Then i'd have someone write me a custom program to cluster them all together get APC to come in and hardwire a UPS capable of running the setup for 24hrs w/o power. Then I'd call the SETI Team @ Berkely and go. Hi here's a present
That'd prolly be like 10mill easy