Hi there,
I am new to Zen Cart and after researching for many hours the FAQs and forums I cannot find what i'm looking for. I need to have two shipping methods. First is a flat rate for our gift cards (no limit on quantity). Second shipping method is by weight (for t-shirts). I do not want the flat rate to show up when ordering t-shirts. If customer is ordering both a gift card and t-shirts, then I would like for the by weight shipping method to apply.

Any help is greatly appreciated!