You can also get a free account at some image hosting site, like
photobucket... then you can upload the images you would like to post there. Your account information as well as the images you get up there will be protected, so there will be no worries about privacy.
Then you select the pic you want to post, copy the url, go to your reply box, click on the pink circle below....
then you will see the below box popping up...
paste on the url you copied from your image hosting album where the finger points, (over the highlighted
http://) then click ok.
You will see your picture on your post!! (if the picture is big, anything more than 600x480), you may want to resize it, or use the gallery though... if you are not sure about resizing, PM me...
Good luck!!