Check out this link to learn about the Pawtucket Red Sox Summer 2011 internship program and to get an application. The program starts in May and the process of applying is now open. I have had positive feedback on this internship.
http://web.minorleaguebaseball.com/documents/2010/09/20/14874564/1/2011_Pawtucket_Red_Sox_Traditional_Internship_Program.pdf