Your link didn't work (it had timed out).
What I do to take screenshots is I use gyazo (it's free)
http://www.gyazo.com
they have a PNG and a GIF app you can download
It allows you to take a screenshot (gif allows some movement in case you want to take pics of your kittycat)
Then you can use the "url" when it pops up, place it in the tiny link when you hit "new reply" there is a row of icons just above the text box. The left most one looks like a mountain in a picture frame, click that. Paste in the url. Submit. It'll show in the body of the mail.
Also on the gyazo page, right click the image to save it to your hard drive. Once you save it to your hard drive, you can attach it to your message here. That is better long term. As free services don't always stay around.
hope that helps.
