PLEASE HELP - "P.O. Box - Show USPS Only"

[Guest]

I just have "P.O. Box - Show USPS Only" installed, it works well as the name of the contrib suggested.

 

My case is that I have three shipping modules installed, that is, UPS, USPS and a Table Rate (based on combination of USPS Priority wtih Registered Mail for highest USPS insurance). What I try to do is to allow customers to choose from ALL three shipping methods for standard street addresses (no "PO Box" in the address line), in other words, I need all the modules to be displayed in that situation. However, when this contib applied, the USPS methods are "disabled" for non-pobox addresses.

 

Questions:

 

(1) Is there any way to allow USPS methods to be also displayed for non-pobox addresses with this contrib?

 

(2) How can I control what type of shipping methods to be displayed for po box addresses (in my case, both USPS and the USPS-based Table Rate need to be shown)?

 

Thanks in advance for sharing your ideas!