I recently subscribed to Scott Guthries blog. I am really glad I did! You see it was Scott that informed me of the article on how to integrate credit card processing into a ASP.Net application. You can read the article here.
http://www.west-wind.com/presentations/aspnetecommerce/aspnetecommerce.asp
Also today was another good day in that Scott informed his readers that the ASP.Net Provider model source code is open to the public. This is great news on those that want to see the inner workings of the new way ASP.Net 2.0 handles things like Membership, Roles and Sitemap among many others. You can find the blog post on this subject here.
http://weblogs.asp.net/scottgu/archive/2006/04/13/442772.aspx
If you have not subscribed to this blog and are only slightly interested in ASP.Net or .Net Programming then you should do so pretty soon. The informaton that Scott conveys in his blog is a lifesaver.