Connecting an e-commerce website

You're talking about setting up an electronic commerce component to your Website.

Assuming you already have a product catalog, you need to set up an online merchant account component on your Website by contacting a finanial verification company like Verisign (now owned by PayPal) for example. They take the financial information your customers provide, handle the verification process, and deposit the proceeds from purchases directly into your checking account, or allow you to drawn from a holding account.

Your bank will also need to be involved in getting this set up. Start with them and also ask the Webmaster who created your site to see how they can help decide what you need electronically.