You seem to be making it more complicated than it really is. IF there is no CC fraud involved, a credit card usually works globally as far as payments are concerned, and as far as shipping is concerned you are in the US so no problems there. If the any online store refuses your CC, there are services that allow you to create one-time-use gift cards, or use paypal, or just take some cash and walk into your nearest computer store or pay a friend and use his credit card.
As far as I am concerned "can I creat a credit card for 2weeks only" raises red flags for me.