How do we get mentor/advisor support for a new incubator program?

Few of us, recent MBA grads, just launched an incubator for start ups in consumer goods and B2B business services. Already have a small team and a few qualified companies in the first class of the program. We are looking to expand the network of mentors and advisors for the program. We need ideas for reaching out and gaining interest and support from mentors and advisors in the industry. Any ideas?