A genuinely “new” chip is sometimes called a “bare” chip– you’ll need to install the Arduino bootloader on it (using a AVR ISP cable) in order to use it through the FTDI interface. If you have another Arduino handy, you can do that with the Arduino as ISP method, or you may want to just purchase a prepogrammed chip.
We do sell them at our store, here: http://shop.evilmadscientist.com/productsmenu/partsmenu/132
