how do I do Free Shipping only?

Hi,

I am near finishing the site I am working on and was looking to do completely Free shipping on the site. when I attempt to enable the free shipping module it turns yellow in the configuration and won't allow me to use just that when I place an order. What am I missing? I want to be able to have clients pay just what they see on the site and do free shipping. Any help is appreciated. Thanks

Have you set up the tax and payment modules and indicated the appropriate zones?

yep, believe I did it properly. I took out the Default Florida tax and added one for MI even though we're not going to be charging tax for out of state customers caus they don't have to pay our state taxes. Do you have to put in a tax in a different field to allow the shipping modules to work correctly? I know that when you go into the free shipping area, I think there was a tax field there to select too.