Authorize.net ARB and Amember integration

I need this as soon as you can: [login to view URL] script is intalled on website. Currently [login to view URL] script supports [login to view URL]'s AIM . We want to integrate [login to view URL]'s ARB along with AIM, and don't have an [login to view URL] account yet, but script should be easily modified by changing merchantAuthentication, name, and transactionKey in the API call. Credit card information shouldn't be stored in amemeber's script database, which is currently intalled on website. We have not yet configured [login to view URL] to work with Amember. We are using 1shoppingcart and would like to move to [login to view URL] ARM. I am relatively comfortable with PHP, XML, and HTML, so I will be able to work with you, but you must know Amember's script very well. Back end features such as canceling subscriptions, authorizing subscriptions, etc. are going to have to be updated. [login to view URL] provides documentation for integrating their API here: [login to view URL] As well as sample code which can be found here: [login to view URL] All of the product and billing information needs to be passed to [login to view URL] when using the new plugin you will develop. We require the ability to modify subscriptions in the aMember administration interface and have those changes updated in the [login to view URL] ARB. We need the ability to add, change, and cancel subscriptions from aMember's interface, as well as issue refunds (may have to store transaction numbers). Additionally, the plugin will need to be able to revise/update any subscriptions due to response codes from [login to view URL] (successful completion, error code, etc), have the option of emailing customer and admin of successful transaction, have the option of emailing customer and admin of a failed transaction and the reason for failure. The plugin should utilize the "Silent Post" feature which [login to view URL] will use to keep Amember informed of the subscription status. If you have any questions, please feel free to ask.