I haven't tried since the software change but it used to be after you respond to, or start a thread at the bottom of whichever it is was/is a couple of boxes and one says "Go Advanced" or something of the sort. Punch that and a list of options comes up. Asks where you want to go for the picture, gives you a place to insert the location, like for me I use pictures from my electronic camera I load into my computer and they have a location like P1000076.jpg which I put into the box where they ask which file do you want to upload. Select it and punch upload and that's about it. Either up load another or go to preview and see if your pic uploaded.
Best I can do from memory.
Mark