Automobile Finance Managment

I need an Access Application to manage customers who purchase vehicles and manage monthly payments they make on the finance contract. Some reporting is required. Presently we have the information in a number of Excel workbooks but need to move it to a more robust database system. The database should be able to handle up to 3 users entering data at a time. I have a template developed for a financing application with the various datasets defined but need a programmer to tie it together and make it work nicely