SMP on BCB 3 && scroll mouse

Hello, I have 3 questions

1) Does anyone know how to make Builder take advantage of dual processors
when on a SMP system?

2) How do I make my scroll button scroll up/down my source code instead of
doing nothing

3) How can I set dependencies between files so that it doesn't compile the
entire project everytime i make the slightest change.

Thanks so very much!!