Yes, you can save more than 1 image. From Windows 7 help and support..
Quote:
If you have an existing system image for a computer and are creating a new one for the same computer, the new system image will overwrite the existing one. If you want to keep the existing system image, you can copy it to a different location before creating the new system image by following these steps:
- Navigate to the location of the system image.
- Copy the WindowsImageBackup folder to a new location.
Also have a look at the Backup and restore section in the Tutorials forum, there are some great guides there that will walk you through exactly what you want to do.