I did spy something on AVRfreaks that allowed communication between a pc using a serial port and a multimedia card with an AVR processor in between. I'm not sure if this is what you require or whether you just want some means of loading info from the pc to an eeprom - if this is the case there's software floating around that will write to eeproms via the parallel port- all you would need to do is to make sure your text data is presented in a form suitable for loading into the eeprom. If the program needs an intel hex file, there are converters that will take you file and convert it into a hex file and vice-versa.