R/click over the top of the image you wish to copy(presuming its...

R/click over the top of the image you wish to copy
(presuming its already published on a web site)

then you will see properties/ Address URL of the image

copy and paste the pictures full URL into the HTML below

<img src=paste URL here>

or
try the search function for charts /gifs or pictures

here is the URL of the..TOP10 website picture at TOP

http://203.153.243.254/images/hitwise/top10_award_oct_dec_2005_01.gif

if you type
<img src=http://203.153.243.254/images/hitwise/top10_award_oct_dec_2005_01.gif>

you will get


go to Account on the top RHS
and add the full code and image to your signature and save...