How difficult is it ti switch payment gateways
I have a client who is using PayPal standard for a payment gateway and would like to know how difficult it would be to switch to Authorize.net. I have never used Authorize.net so I really don't know what is involved in switching from one payment gateway to another.
Can anyone explain the process of switching to a different gateway and the differences between the two, maybe provide a sample of the code used for authorize.net as it pertains to the shopping cart form?
Am I better off rebuilding the cart with an Authorize.net payment gateway?