PROGMEM: storing and retrieving unsigned long data

Projects Programming
2

Here is a link to all the PROGMEM functionality

http://www.nongnu.org/avr-libc/user-manual/group__avr__pgmspace.html

http://tom-itx.dyndns.org:81/~webpage/abcminiuser/articles/progmem_basics_index.php

the macros like pgm_read_byte are what you need.