The Internet service provider that hosts your Web site might have a program to simplify matters for you, or you can turn to a third party. But it is essential that you be able to display those little MasterCard and Visa symbols on your site if it is to be at all successful in reaching the public. You should look into accepting as many payment options as possible. Credit card and money order acceptance is the absolute minimum. Take a look at any successful commercial site to see what else you should consider.
Security again comes into play here.
The Internet is a tough neighborhood, with potential miscreants constantly rattling your back doorknob to see if it s locked. You should be aware of all the security procedures and capabilities of the provider hosting your site. You also should know all of the possible security measures your chosen software package provides. It is vital to follow these procedures to the letter and to implement every security feature offered. Taking all the available security steps could constrain your agency a little.