We maintain a searchable database that includes faculty of the Division of Biology and Medicine, in a user-friendly format. It is called THE RESEARCH PROJECTS COLLECTION, and is here: http://bms.brown.edu/bug/research/
Faculty included in this listing understand that they may be contacted by undergraduates seeking projects for senior capstones, Honors, research experience, summer work or volunteering, etc.
This database may be searched by Faculty name, Department (both campus and hospital based), by keyword and via a topic-based search engine. Most faculty pages are also linked from here to their OVPR profiles for additional details.
WHEN to begin the search: It is optimal to begin search a semester or a year prior to undertaking the start date for research, especially for the capstone projects or for summer projects.
For related information, See Mythbusters Chapter 17, 22 and 25 also.