Don't forget, you can extract the Windows 7 iso onto a bootable USB. Makes the install much quicker:
1. diskpart
2. select disk 1 (if disk 1 is your USB stick)
3. clean
4. create partition primary
5. select partition 1
6. active
7. format fs=fat32 (ntfs also works).
8. assign
9. exit
10. Extract the ISO
11. xcopy d:\*.* /s/e/f e:\ (Copy Windows 7 iso content to the Flash Drive E:)
