Newb question... I'm wanting to download a game or 2 that aren't available physically. 2 different video game people told me that they wouldn't do it with a credit card b/c of hacking. That I should get a pre-paid thing from Gamestop or 7-11. One of the people who told me this worked at a store, that wasn't Gamestop that didn't sell these. So, true? Or will a CC be fine? Is it general knowledge to just buy these cards?