Some of my customers have told me they can't see the shop and get an error message.
The only common thing is they use Windows 7.
Any ideas?

I am trying to set up the shipping.

I have installed the Royal Mail extension and am using weight based shipping but have noticed that the prices it generates are not current. Is there away I can update them automatically or manually? Is there a way that I can use Royal mail without using weight based shipping?

Also is there a way of shipping by zones, for example one cost for UK, one for Europe, one for rest of the world?

When I set up the shipping zones it would only show shipping in the cart if I choose all locations rather than my UK location. Does this mean that customers from outside of the UK will also be able to choose UK shipping such as royal mail first class or will they only be able to see the International options?

One last question, at first I choose display delivery time, but in the cart it just showed the text estimated time rather than a time such as 3-5 days. Is there a way of fixing it please?

Thanks
Wendy