First you start the Twitter Poster feature
You select the account you want to use or type in your username and password. Click on login and wait until the software successfully logged in and shrinked the window.
Now you select what you wanna do!!! Select Photo Tweet.
You can write your tweet and just click on ADD PHOTO and select the picture from your pc.
You see your tweet(s) in the list.
You can enable or disable tweets. When you have added all what you wanted hit the Start TweeT button.
TWITTER TUTORIAL VIDEO: