External Hard drives series connections

I am very sad ,because  i had buy  WD "MY PASSPORT "500g product in 2010/08/20

But these days i can not read all information from 'my passport"

i have very very very importtant information and issued inside.

would you pls tell me how can i to save or recovery it ,

i need document  ,i donn.t want just to chage a new one for me ~~

pls help me how to do next step~~i donn;t have much money to save my socument from “my passport”

how could i rto do ???

thanks a lot 

and very ungent!!!

Doris

Taiwan +886+955+65+6633