Nearly have GC installed and working in the sandbox environment. Just have one simple question regarding the shipping generator file.

I am using the Table option, based on total price in cart. My 3 diff' levels for pricing are $25:5.50,50:6.50 and 98.99:7.50. Everything 99 and above ships for free.

Do I need to 'generate' 3 different shipping files for GC or just one?