As you all might have noticed, Microsoft took Windows 7 down from its digitalriver site.
But if you still need the image here are some official mirrors of the image (completely legal).
Note that even if they say german they all have the option to set them to english when installing them.
Windows 7 Home Premium:
http://winfuture.de/downloadvorschalt,2662.html
Windows 7 Professional:
http://winfuture.de/downloadvorschalt,3291.html
I hope they're useful to you.
But if you still need the image here are some official mirrors of the image (completely legal).
Note that even if they say german they all have the option to set them to english when installing them.
Windows 7 Home Premium:
http://winfuture.de/downloadvorschalt,2662.html
Windows 7 Professional:
http://winfuture.de/downloadvorschalt,3291.html
I hope they're useful to you.