You have to host the pictures somewhere like, photobucket or imageshack.us.
Once you upload them, you need to view the picture, right click, select "Copy Image URL", then come back to your post, click the IMG tags, then "control V" to put the code between the img tags. Click preview and you should see your picture.
In loving memoryE.J. Hartman
November 1960-January 2011 Andrew J. Reagan
March 1983-July 2011