Hi. I recently ordered a MacBook with 4GB of RAM online. I have some free time tomorrow and would rather cancel the online order (which has not yet shipped) and go to the Apple store 45mins from me and buy it there. I have some questions: 1. Can you buy the 4GB RAM MacBook in the store, or is it online only? 2. Can I use the financing card (Baraclay, I think?) to purchase the MacBook in person even if I do not have a physical copy? If so, how? 3. How long will it take to erase the credit charge on the financing card if I do cancel my order? Thanks.