I don't really know if it will work, as I've never tried it.
The flashwizard pro people might use some kind of proprietary format, too.
You can use the dd command to extract image files to a device, such as:
Code:
dd if=file_name.img of=/dev/sda1
...if you wanted to extract the image to a USB flash drive, for instance.
I'm not sure what would happen if you tried to extract it to a folder in your /home directory, so be careful if you should try it. You can check the dd man page for dd for more information about using the command.
Maybe someone that has more experience extracting img files will reply with more info.