What are the Aweber API Variables $account_id and $list_id?
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You can check here:
https://labs.aweber.com/docs/code_samples/subs/create

The script to add a new subscriber to the list via api requires those two pieces info...only I cannot figure out for the life of me what those two variables are!!  I've beaten through every little aspect of my Aweber Subscriber Account, AND my Aweber Labs account...and I can't find any reference to either of those variables anywhere.  I've submitted some tickets to them, and haven't gotten any response yet.  

Does anyone have any ideas here?  I've tried my account names, my list names, to no avail!