PLEASE
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html then look down to item #7 about how to post your code.
It will be formatted in a scrolling window that makes it easier to read.
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Have you tried the sample code that came with the library to check if you can get a successful compile?
The seed library is for a serial comms to RFID reader not SPI.
Thanks.. Tom.. 