Your BS should be able to help - in fact they should be helping period, given the cost of an MBA. Was it F/T? If so you should have had plenty of opportunities to make use of their careers offices and alumni networks. If not best get started on that. Use your alumni networks. I assume as you are happy to take an internship you are not working currently? Go back to any employers you did MBA projects with - see if you can get a project role there, and while you are there network. Frankly after 7 years experience and coming top in an MBA you shouldnt be looking for internships now, you should be looking for a F/T position, but that is most likely to come from working industry side and moving across into MC now.