Symetric multi processor

[Littleguru]

Hello

we have a dual processor box with fedora installed on it ,and we think 
only one of them operational .
how can I monitor both  CPUs , and do i need make changes in kernel  or 
do I need specific kernel .
and can i choos asmp or smp with choosing different kernels , because I 
thing asmp is better and it is running only in risc computers .

appreciate for help