you say you are using paypal, but don't mention whether it is paypal standard or paypal payments pro.
the process is vastly different between the two, please be more specific.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.