It's seems such a simple request - a plugin that allows you to create custom forms, with authorize.net functionality, so your forms can take credit card payments - but I can't find a single one. This is odd, especially considering that:
1) There are lots of plugins with Authorize.net functionality (i.e. even registration, recurring billing, invoicing, shopping cart, etc.)
2) There are lots of form generators, including ones with PayPal.
But alas, I can't find a plugin that is both 1 & 2.
Anyone know of any that I overlooked?