If you’re interested in starting a gateway, we recommend having a developer review the code for gateway servers: https://github.com/ripple/ripple-gateway
Just remember that you will be responsible for managing compliance issues in each jurisdiction and establishing a relationship with a bank (or other licensed entity) willing to accept fiat deposits from your customers (i.e get a partner with licensing in the each end of the payment corridor you are thinking about).
Posted in: Ripple for Entrepreneurs