Originally Posted by MelissaL
DO they need to be hosted on an outside site such as flickr or photobucket?
No they don't need to be hosted elsewhere. In fact, once they're uploaded here they'll stay part of the post forever. Unlike if one of the free sites goes away.
Once you get the reply window open, below the "Submit Reply" you'll see Additional Options. Click Manage Attachments.
A window options where you can upload up to four pictures at one time. Browse and find the pictures on your harddrive. Click Upload.
Now your pictures will show at the bottom of the post. If you want them to appear within text, such as I've done here. Click the Paperclip in the toolbar
Hope this helps.