I use internetcalls.com instead of a card....if you have a landline it's basically free to call anywhere because every time you load your account (with at least 10 euros) you get 100 days of free calling...and you can either use your computer, their system (which will call your number and then the number you're calling) or your landline with an access number....for instance my cellphone # is in my account, so I can call the states from my cellphone just like I'm calling a local number.