My favourite snapshot tool(free) is Greenshot and can be downloaded from:
http://greenshot.sourceforge.net/ .
Once you download the Greenshot and place the icon on the desktop,double click on it. Then it can be seen in the system tray (bottom right of the monitor page). Then open the web page you want to take a snapshot of. Right click on the green colored icon in the system tray. You will be provided with a choice list. I usually prefer the"capture window". Click on it.The web page becomes colored and a cross-hair mark (as a sniper get's to see ) appears on the web page. click on it.Then you get to hear a sound akin to a photo being taken!
Now you can see behind the picture of the web page snapshot, "Greenshot Image Editor". Click on "File"at the top left hand upper corner of the editor and click on "save as" in the drop down menu.. Then the picture will be saved in the "My Documents". Too many clicks,but that's the way to go, just try it once!
O.K. Taking a snapshot is one thing and sending it as an attachment in your post to TG.org is another thing.