Have you tested the mobo with another cpu to see whether it really is dead? Likewise, could be just the mobo, not the cpu that is dead. If you can, test them both in other machines to decide whether they both are dead. What exactly 'went wrong' as well - if the screwdriver slipped and went straight through the cpu and mobo then they probably are both lost :-D
If either or both are really dead, you have my condolences - what was the cpu and mobo?