Yes, you have to put your pics on a hosting site, most use Photobucket. To then put them on here you have to use the 'Use rich formatting' link next to the reply button. In there you will see the Insert Image link to add your pics. But this might help you more.
doogsmodels.com/.../how-to-post-your-photos
But be aware this is slightly out of date. Its no longer the film strip you need but the one to the left of it.
I am a Norfolk man and i glory in being so
On the bench: Airfix 1/72nd Harrier GR.3/Fujimi 1/72nd Ju 87D-3