1 - store the pictures in any of the websites used for that purpose such as photobucket.com
2 - use html codes to post them here. i cannot write the whole code in 1 line otherwise it wont appear. i will write the code here with each symbol in 1 line. all you have to do is to type the entire code in one line with no spaces between characters (except between img and src and just before width="350") and replace http://www.photo.jpg , with the picture address (url), keeping the " ".
Now here it goes:

<
img src=
"http://www.photo.jpg"
width="350"
/
>

for the size of the comment's box, its advisable you restrict the photo size and that's why I added
width="350"

hope it helps!

Here is an example. I choose a picture already available on line with the following url: "http://www.merc-fia.com/media/files/misc/qatar2010.jpg"