well, SEO is a an internship/career development program. they place students in internships in top corporations and foundations. there is a corporate law track, but its not to prepare you to go to law school per se.
cleo is a legal opportunities program that is focused on preparing people of color and socio-economically disadvantaged people for law school and moving forward into the law profession. there is a 6 week institute that people have participated in, and wrote some stuff about in a thread about cleo in the black law student discussion board. there is also a weekend program that I participated in. It included a series of workshops about what types of classes take place first year and time management skills. read the thread about cleo and you'll get alot more information about the program.