For good info on the cart business, take a look at Vendingcarts.com. They have a good program in CD format, and their older cassette versions can often be found on Ebay. I used it to start my business. Beware All-American. The carts are poorly built, and when you have problems, its your problem. Many health departments won’t approve them. The model 325 from Creative Mobile Systems is a great cart…well made, and its also approved by NSF, which is a sanitation organization Health Departments like. All Star Carts and Vehicles in New York also makes a good cart. Good luck!