How do I embed screenshots into my post?
Under new reply, you should see an icon - a photograph of a tree is what it is- and all you have to do is to click that and paste the URL of your screenshot.
How do you get a URL of your screenshot? Upload them through any of the internet's file sharing sites, once you upload the screens there, the URL should be there for you to copy. Else, just right click the uploaded photo (make sure you dont right click the thumbnail) and select "Copy IMAGE Location" and paste it unto the Picture Icon, that should do the trick.
The result should be something to this end on your reply field (without the apostrophie):
'http://www.as-sainte-adresse-but.com/assabut/neige.jpg'