Transferring sms to memory card to be opened in a pc?

my unit is nokia 6680, im using 1 giga of memory card, i was able to use the memory of the card to store my text messages instead of using the phone memory. but the question is. how do i open these text messages in the computer? or what softwares do i actually need to be able to open the sms from the memory card directly? is it possible? thank you