This is how you post the screenies, just click here http://meepcraft.com/threads/uploading-pictures.14766/#post-141819
Ok so,
Step 1: Click on your start button.
Step 2: There should be a searchbar, you type in this exactly %appdata%
Step 3: You double-click on Roaming, and it brings you in a file.
Step 4: Click on the .minecraft file.
Step 5: Click on the screenshots file
Step 6: All of your screenies are in that file, if you want to post it on forums, go to Highlander's thread above.
Someone might have posted this, but I am not entirely sure.
Hope this helps!