Sorry, to come into this and revive an old thread, is it possible to setup a standard Paypal business account to do the authorization. I have used the paypal shopping cart in the past and there are fields in the IPN return to indicate that an authorization was made.

I just don't seem to be able find a place in the profile to set the mode.

Forgive me ahead of time as I am new to these boards and to Zen-Cart, but any information would be greatly appreciated.