We don't recommend using Paypal standard, instead, you should use Paypal Express Checkout.
It is also a free service and has the same checkout workflow, the difference is that paypal standard is not a real time payment gateway and relies on IPN to post the transaction details behind the scenes whereas paypal Express is a real time gateway and can direct the customer to a proper success or failure message.
I am pretty sure that paypal express is available in Norway.