[khafan]

ok I think you have only 1 partition on your current 80GB hdd, goto my computer and you should see only 1 hdd drive there (C: ), so the path to source partition will be "C:\" , when you add the new 200GB hdd and format the hdd, another hdd drive will be added to my computer (D: ), so the path to destination partition will be "D:\".
But first make sure that you currently have only one drive (C: ) in my computer.