Taking full advantage of Intel Quad Core with Freebsd 7.2p2

[David Southwell]

7.2-RELEASE-p2 FreeBSD 7.2-RELEASE-p2 #0: Wed Jun 24 00:14:35 UTC 2009     
root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64

This system uses an intel quad core processor.on an Asus p5QL-E Mobo.

Can someone please advise me on the best settings to take maximum advantage of 
the quad cores especially for compiling.

Thanks

David