It depend how much strings.. if it fit the internal EEPROM you may need a structure to make life easy. If it don't fit in the internal EEPROM, you can still use an external one OR use something like...
http://www.pbpgroup.com/modules/wfse...p?articleid=10

They're a whole thread here about that called 'embedded strings in your codespace'

How toi display HEX? LCDOUT HEX YourVar