Please help! I'm setting my online business up I'm done with just about everything but can't figure out how to set my site up where someone submits their credit card number to subscribe for a monthly service. I need to be able and bill these customers once a month. How do I do that? Any answers would be greatly appreciated! Thanks!

Paypal!!!! But it depends on the business... and some site hosts offer services to help that. I believe that yahoo- geocities does!