If you're using a computer, it's Print Screen or Prt Sc to take screenshots. (Beside scroll lock and shares System Rq) For a laptop, you might need to hold on to Fn (Function)

You can edit the shot in Paint by pasting it there. (When you get a shot it will be copied)

No. I've seen someone else's layout with this picture.

It looks cool =DD

But I can't seem to put it on my blog.

"Your template could not be parsed as it is not well-formed. Please make sure all XML elements are closed properly.
XML error message: The element type "img" must be terminated by the matching end-tag ""."