[chris.barber]

When I installed this mod I had a problem with it showing shipping methods I didn't want it to show, I coded a way around it then about 4 months later when I bought the OPC (I think) the problem occurred again.

This is just a thought but on the General Settings, Shipping Options page, there is a flag called "Enable all shipping methods even if a customer is not logged in:" make sure this is unchecked, see if that helps.

ReadytoCover, I think this code in the shipping_estimator.php file controls whether it shows up or not.

if($login != ''){
$zipcode_estimate = '';
$default_country_estimate = '';

but others may know for definite, but you could try wrapping if($login != '') in {**}, like this {*if($login != '')*} and see what that does for customers who are and aren't logged in.