Well according to the site it goes like this:
Connect the new drive as D and then in a DOS line use the following commands:
FDISK (initialize a partition)
FORMAT D: (init volume for file access)
XXCOPY C:\ D:\ /CLONE (copy all the files)
connect the new drive as C (Making the necessary jumper changes to both drives)
FDISK (set the active partition)
If you use the windows admin tools, computer management to format the D drive and prepare it for use you should be able to skip straight to the
XXCOPY C:\ D:\ /CLONE
command and then it just needs the FDISK command to set the partition active. If it goes wrong then you can just re-connect the old C drive back up and reboot