Step one: Go to www.imageshack.us
Step two: Click Browse
Step three: Choose the image you want uploaded
Step four: Click 'Start upload!'
Step five: Scroll down to the 'Hotlinks' as shown in the image below
Step six: Uncheck 'Include details'
Step seven: Copy and paste the 'Hotlink for forums (1) ' onto the post where you want the picture.
And now you have your picture posted!
Hope this helps!
MiM3