once your new drive is installed and formatted and "seen" in My computer
then use xxclone (free in my signature links) it will transfer the whole contents of your current drive EASILY to the new drive; there is also a guide in there how to use xxclone
if you are looking for a program more individually selective (like data/movies / pictures etc) then use Snapbackup
http://www.snapbackup.com/
you dont need to buy anything, as long as both drives are seen by your computer