It only works in Linux.
If you don't have a working linux system your best bet is to download a linux livecd that already has GNU ddrescue on it.
http://ubuntu-rescue-remix.org/
http://www.sysresccd.org/Main_Page
The cd is bootable and does not install on your system.
It's not a bad idea to install Ubuntu to a spare hard drive and then just install gnu ddrescue, testdisk etc via the Synaptic package manager. At least you will have a GUI to navigate around as some people can get a bit overwhelmed by only using the command line as is the case with the above two live cds. It's always handy to have around incase windows goes belly up and you need to access the files, format drives, resize partitions, export registry etc. It's a very handy swiss army knife![]()
Thanks!
Going to give it a try.