The steps that you must follow are following:
1) add to basket the chosen article (or the articles);

2) checkout your order;

3) select a shipping method (ex: Northern America Priority);

4) select a shipping region (ex: U.S.A.);

5) select a tax region (ex: Others Countries);

6) press a grey rectangular button Checkout (bottom);

7) Enter your personal information:
*Name (First/Last)
Company Name
* Street
* City
* State
* Zip
* Country
* Phone
Fax
* Email
Your notice to us.

And select "Deliver to the above address or  Deliver to a different address
(* these fields require data).

Now press NEXT botton. (you connect with the cryptographic banking security system).
a) Press “ Ok I’ve choosen this way of payment “ button.* * * * *
b) Enter your e-mail address;
c) select type of credit card (tipo di carta) Visa or Mastercard.
d) enter the credit card number
e) select  a month expiration card (data scadenza:  mese)
f) select a year expiration card (data scadenza:  anno) and press OK button.
All fields are require.

* * * * * If you are still problems, at this moment choose - Other ways of payment - and send us your request.