I am new here and wonder if anyone can help me with modifying my shipping module.

I do not want to use weight to determine my shipping rate.

I want to set up 4 zone (UK, USA & Canada, Europe, Rest of the World) with 4 different shipping rate per item. How do I that? Can you provide me some code?

I would like to know how to set shipping discount?

Thank you very much and I hope anyone here can help me.

Stenno Chau