gomore11,
If I can get the N+2 board and the NFC card working I may be able to help. I have a WP8 (Nokia) so I also want the recognition and data transfer to work.
Mark
If you are using a N+2 board and a shield designed for a arduino or Netduino don't you have to jumper the I2C pins from the N+2 dedicated pins to the ones used by the shield (analog pins 4-5: I2C SDA, SCL)?