e-commerce checkout doesn't work

Hi!

I use wp e-commerce, a webshop plugin.
I have added some products to the shop and everything works out great but I cant fix a checkout page. When you add some products to the shopping cart you will se the number of products and the sum of the product in the top right corner. Then you can click checkout, and I would like to have some kind of form where the customers can write their adress and phone number etc. before they send their order.
Im not paying with paypal or something like that, I send invoices.

But the checkout page is empty.
When im online at adminpanel there is a page named “checkout” but there is nothing on it and I don’t know how to work it out.

I have webshop with no checkout.

Very greatful for all help I can get!