Some MFO members have asked about Jing which is a screen capture tool I use when posting withn the MFO discussion box. Here's the link to download the free software:techsmith.com/jing.html
Jing can be a little squirrely at first. There are a series of short video within the help area of Jing that might answer most questions one might have. Here's a link to the help section:techsmith.com/tutorial-jing.html
If you are trying to capture an image and then embed it in MFO discussion box then you first need to create a button for the purpose of embedding your capture.
Here's a short video I found within the jing help area that should guide you through the process.techsmith.com/tutorial-jing-embed-content-using-screencastcom.html
After creating the embed button in jing you can then capture images, activate the embed button and embed your image into MFO discussion box by pressing both CTRL+ V in the area of the discussion you want the image to be placed.