Yes, I am using PowerStore2.
Ugh. I just found this thread. I guess I thought, because of the way that the PowerStore marketing verbiage was worded, that if you had eCart you could modify PowerStore to exactly what you needed. I'll just have to tell the merchant that I'm working with that she can't have PayPal on her site.
Specifically, what do I need to delete to fully remove the PP processing from the checkout? (I just don't want to screw-up the rest of the check-out process)
As for the shipping options, you said:

You would also need to edit the shipping rule in the eCart objest to add the session variable value as a trigger. We do not have any explicit documentation for this, but it should be pretty strait forward if you are comfortable writing PHP code, and using eCart.

I'm just getting the hang of using the eCart extension pack, but PHP is still pretty foreign to me. Adding the select list won't be a problem, but the hand coding- frankly- I have no idea how to do what you're telling me to do. Should I just include this in my support ticket?
As I mentioned before, shipping options are standard fare with eCommerce sites, and I really thought that the store would be more customizable with the eCart extension pack- without so much hand coding. I would appreciate any help you can provide with adding this common store feature. Thanks!