Right under the "Quick Reply" area where you type in your response you will see "Post Quick Reply" & "Go Advanced" Click on "Go Advanced" and another window pops up that has your reply typed into it. Scroll down a little bit and you will see a tab that says "Manage attachments" Click on that, then when the next window pops up you will see the "Manage attachments" window open and (7) places that says "Choose". Click on choose and find where your pics are at on your computer. Double click a picture then click where it says "Upload".