I'm on ZenCart 1.3.7. I just signed up for a FedEx API account, and within seconds, my store seemed to query FedEx for live rates. This is great!
What I'm confused about is what FedEx module I should or should *not* be using. 1.3.7 has a 'FedEx Ground' module built in (if I'm not mistaken). A lot of the forum threads seem to refer to user contributions, such as the module by numinix.
Is there a clear 'winner' in terms of FedEx integration?
Final questions:
Is there a good, general howto for ZenCart / FedEx integration?
Is there documentation for the stock FedEx ground module?



