Recently, I have been looking at Imaging OS Systems on my Raspberry Pi. Whilst I was looking, I found Win32 Disk Imager, a program I found to be really useful for imaging ISO's.
The project that can be downloaded here, features a really nice and intuitive user interface to make imaging just that little bit easier.
The tool is really simple to use even if this is your first time creating an image for a USB Drive or SD Card.
Simply, download an ISO then save it and wait for it to download. Then browse to the location of the image and name of the image. After, all you need to do is select the drive and click Write. And your image will be applied after the progress has completed.