Install virtualbox download from here-

<http://download.virtualbox.org/virtualbox/5.0.16/VirtualBox-5.0.16-105871-Win.exe>

1. and then install your desired windows
2. after all then install httrack website copier.
3. Then copy url to httrack.
4. Httrack will be download your website.
5. then close virtual box.
6. it asks to save state or turn off machine
7. then click on save state and then it saved.
8. after next day start your virtual box and then your httrack will be
resumed.
9. download websites in parts.
10. then by using file sharing wizard between host and vm 11. box then send
your httrack data to our real windows.
Enjoy it.