Authorize.net Payment!

Does anyone have knowledge of this module? Are there additional Modules that are required. Does this work along side the payment module from the core, and add a new processor option, or does this replace the payment module from the core. If so, does it work with the membership levels module from the core, or does it require other addon modules.

Post a link to the one you are asking about so people know exactly which one you are talking about.  If you are referring to this one:

http://www.boonex.com/m/Authorize_net_Payment_

That one was last updated two years ago and the author only has one forum post here.  These are strong indications of something to stay away from.

After looking at the market, these are the only payment gateway modules I could recommend you consider.

http://www.boonex.com/m/payments-for-dolphin

http://www.boonex.com/m/payza-alertpay-payment-provider

http://www.boonex.com/m/CCBill_Payment_Provider

If you need something that the above can't provide, maybe one of the authors of the above modules could do something custom for you.

Thanks for your insight. We have purchased a module that should take care of this issue. It uses Authorize.net and the client is working with his bank, to get their mechant account connected to the Authorize.net account.