toplisek - 9:55 am on Oct 24, 2011 (gmt 0)
Usually there is:
Quoted: Most shopping carts by default integrate the payment before the actual checkout
1. Buy page
If sentence:Cart is empty,Your cart is empty, so you cannot proceed to checkout.
2. Order page
3. Add to Cart (Products were added to your cart)
Showing Cart content and button:CHECKOUT
If sentence: Register/Sign in (Returning customer)
The customer can select his payment option, then actual checks out!
Let me know if this was solution.