How to mount an ISO file with Windows 7
The simplest way to mount an ISO file within Winodws 7 32bit is to get Microsoft’s free utility.
According to Microsoft’s site “This utility enables users of Windows XP, Windows Vista, and Windows 7 to mount ISO disk image files as virtual CD-ROM drives.”
http://www.microsoft.com/en-us/download/details.aspx?id=38780