Some links to various sites talking about how to become a faculty member in the sciences at a small liberal arts college.
Hunting for jobs in liberal arts colleges (Specifics for physics, but generally apply to all)
Uncertain Principles (A blog of a physics professor, Chad Orzel, at a LAC)
Pharyngula chimes in as well.
About the Annapolis Group, private LACS
Listing of the Annapolis Group