I'll preface this post with a disclaimer that I am not being compensated whatsoever for my recommendation here -- not even a free t-shirt! :) But if anyone wants to send me a t-shirt... (j/k)

If you are just getting into a photography business -- perhaps it's a home-based, start-up business -- you might consider Printroom.com for your online gallery hosting and print provider solution. I've used Printroom for five years and I'm very happy with them. They are very affordable (under $100 to sign on to use them to host your picture galleries), their customer service is outstanding, the web-galleries are very simple to manage, and their proprietary upload / file management software (included in the yearly plan) makes fulfillment of your client orders as easy as a few clicks of the mouse.