Shipping Problem

[sarwana]

Hi,

 

I like to setup a free shipping for over £100 but when I do this it changes all shipping to free which i dont wont to do this.

 

E.g.

if order is less then £100 i will have 3 Option

1. Standard Delivery 3 to 5 = £10

2. Delivery within 2 days = £15

3. Next Day = £25

 

But if the order is more then £100 then

1. Standard Delivery 3 to 5 = free

2. Delivery within 2 days = £15

3. Next Day = £25

 

When I set this what happen is this

 

1. Standard Delivery 3 to 5 = free

2. Delivery within 2 days = free

3. Next Day = free

 

What Can I do to change this