If your wanting to Image your entire HD, of your Windows installation and other personal DATA:
Acronis True Image 2010 will do just that very well and work very well under 7 64.
Others here at the forums recommend Paragon Back Up & Recovery, as it does the same job just as well.
Others more familiar with it may be able to give more details about it.
It doesn't have some features Acronis does, BUT, its free, and the core functions of back up and restore work just as well.
So its a matter of, are the extras Acronis offers worth the Premium to you?
Such as try and Decide Mode etc.
As far as copying that image to another PC, you'll have issues.
Drivers for one, depending how much hardware is different, could cause BSODS upon boot, not to mention your Windows 7 activation may begin showing its no longer Genuine.
Recovering DATA however, such as pictures,music, photos, and other types of personal DATA should be no issue.
This will be the case no matter what imaging software you choose.