Working on Authorize.Net

Here is some link that shows how to work/implement with Authorize.Net.

(1) the jackol’s den » Blog Archive » Authorize.Net Integration using C# / ASP.NET

(2) IPN for paypal in C# - ASP.NET Forums

(3) Sample Code

(4) Authorize.Net Developer Center

(5) Payment Types

(6) Merchant Accounts eCheck FAQ exclusive electronic check payment solution