How do I get PayPal defaulting to $AUD?

Hello, I would like to know how to make my Paypal checkout default to accepting payment in $AUD. All of my customers are being charged in $USD. My zencart currency is set to default to AUD, as I am located in Australia and most of my trade comes from there.
I have the PayPal modual installed on my zencart V1.3.0.1 and, in Modules/Payment/Paypal IPN, have set my 'Transaction Currency' to 'Selected Currency'. I have absolutely no experience with installing zencart. Is there something simple I can do without refering this problem to my web administrator? If not, what should I advise them to do to fix this problem? Thank you kindly, Mick

In admin Click on modules > payment > paypalIPN > EDIT and select Only AUD ? I think there is also an option within paypal itself that you might need to set.

Thanx Pauls, but I have been to modules > payment > paypalIPN and there is no option to EDIT and select Only AUD.

You don't see that in your PayPal module? I guess you and i must be using different versions of the cart with a different PayPal module maybe? I am using 1.3.01, and you ?

Sounds like you didn't uninstalled the paypal module and reinstalled it after upgrading from your previous version to the latest version of Zen Cart (v1.3.0.1). ;)

By re-installing it, it should definitely resolve the issue.