The weight table shipping module by world zone allows you to specify different shipping charges based on the method of shipping AND the weight of items AND the country the item is being shipped to.
The weights are setup by range groups, ie. from weight total X to weight totalY, the charge is Z. Multiple weight range groups can be established for each method of shipment and each world zone. A world zone can include one or more countries. As a wildcard, you can charge shipping to all countries not already placed in a zone rather than placing every country in one of the zones. Not compatible with the current google checkout module as that module does not use the customer's address to select the shipping methods available.
It supports MySQL as long as load balancing has the data stored on the single MySQL server and permissions are set correctly on the data directories. This would be the case in most of the server setups.
Emporium Plus creates and licenses plugin modules for Miva Merchant, a highly extensible eCommerce shopping cart application for the Internet.