Seagate external HD .Image software

[weeowen]

I've got a external seagate hard drive and have used the seagate software to create an image.
The pc is now slightly problematic so I am looking to use the image to restore it.Any ideas how to use the software as it has got me stumped. I understand that the software is a trimmed down version of Acronis true image and is called Disc Wizard
Thanks.