What is needed to start a vehicle repo business in Illinois where would I obtain the insurance for the business?

What is needed to start a vehicle repo business in Illinois where would I obtain the insurance for the business?
Illinois small business info Some useful links to Illinois' small business information:

http://business.illinois.gov/http://www.ilsmallbizadvisor.biz/ilsttemp/http://www.illinoisbiz.biz/dceo/