Freeware: Self Image - The FREE (and open source) hard drive imaging utility for Windows

http://selfimage.excelcia.org/
SelfImage is the little hard drive utility with big aspirations.

SelfImage is capable of making an image file of a hard disk or hard disk
partition, and can restore an image back to any drive or partition that
doesn't have open files. Useful for making backups. Unlike dd for
Windows (or cygwin), SelfImage is capable of creating an image of a
partition that is currently in use.