Just insert a CD or DVD, or open any file saved on your computer, USB device, or hard drive. Then run DVDGo.
Once inside, just click on the screenshot button found on the toolbar, which also includes rewind and fast forward options to help you find the image you're looking for.
You'll be able to save in BMP, JPG, GIF, PNG, and PDF formats, or even HTML if necessary so you always have your screenshots in the format you need.
If you're watching a movie in full screen and don't want to close it, you can use CTRL + S to take the screenshot, or drag the still into the image library.
Once you have the screenshots you want, you'll be able to edit them using DVDGo and adjust them however you like.