The following are links to different methods that you can post pictures on this forum:

Easiest - http://k9academy.dogboard.net/dog-pictures-and-videos-f13/1-resizing-and-posting-pictures-really-easy-t40.htm

Medium - http://k9academy.dogboard.net/dog-pictures-and-videos-f13/2-resizing-and-posting-pictures-normal-t39.htm

Hard (but you get to keep pictures for future use) - http://k9academy.dogboard.net/dog-pictures-and-videos-f13/3-resizing-and-posting-pictures-hard-t38.htm

Read through those and pick whatever method you wish to use to post pictures.

Have fun