writing / reading eeprom data

I am working on an RFID project. I have everything working - and just
want to add some bells and whistles.

I would like to store 2 RFID tags into EEPROM; say something like
170EF000D and 140GK01234.

I have read the arduino documentation and looked at the examples -
but I can't wrap my head around how
to do it - since these are alphanumeric values.

Would anyone have a small snippet of code that does the writing and
then reading of a string
into and from internal eeprom?

Would appreciate it...

http://www.arduino.cc/playground/Code/EEPROMWriteAnything