New User - Reacting to RFID Tag

Ok, I've spent quite a while looking over what you sent me, and I really don't see how any of it fits what I need to do, it's all far too complicated for what I know/want to do.

I've tried google but have also come up with nothing.

I just need to set of the LED when the right RFID card is scanned, I can't see anything in the arduino library about this either.