Hello All! This is my first post, although I've read through this forum an awful lot, I finally had a reason to register. Anyhow, I recently bought a Macbook Core Duo 1.83GHz that is developing a logic board issue. Now I have no quams with performing laptop surgery, but I was wondering if I can upgrade at this point. Is it possible to put a C2D logic board into my CD macbook? The price difference between the 1.83GHz CD and the 2.4GHz C2D logic board is small enough that I could afford to do that if it would work. And if I can't put a C2D logic board into it, can I at least go to the top of the line CD logic board? Thank you all for any assistance!