Hopefully this doesn't confuse you!!
PHOTOBUCKET
1.) Open a photobucket account.
2.) Click into "my albums", then click "albums & upload"
3.) change the screen size to 15"
4.) click "upload images & video"
5.) Downlaod the picture you want (this is different for every compute.)
6.) Once the picture is downloaded, place your cursor on the picture, move down onto the "IMG code" and hit enter-picture now copied
MFF
7.) Start new topic.
8.) paste your picture(crtrl+v)