During the preparation time you should review note taking skills with the students and teach them how to interview someone, which includes questioning and listening skills. You might even role play an interview with an actual leader. Select one student to conduct the interview and critique the process as it is happening. Some of the more challenging students will often respond better to a certain type of personality. If possible, consider video taping each of the interviews.
Students can watch the video for more detailed information after the interviewee leaves.
While the interviews are going on be sure to take a few still images with a camera. You might also want to read and discuss sample biographies, either on the web or in novels. Determine the schedule for the computer, scanner and internet connection for students to use while developing their web page.