Looking for a copy of Windows 7?
The following may help you.
Microsoft said:This site enables you to recover and install Microsoft software purchased through a retailer.
This site will help you accomplish the following:
• Create a Windows 7 DVD for installation on a new hard drive
• Create a backup Windows 7 DVD
• Create a bootable USB drive with a copy of Windows 7
http://www.microsoft.com/en-us/software-recovery