just hold the red sync button for a few seconds on the console next to the SD slot the press the sync button on each wiimote(next to battery compartment) to fully sync(not temp sync) the wiimote to that wii
Well either take the image URL, ending in .jpg or .png or an image file format, and use the "insert image" button and paste the image link there, or just copy and paste the picture into the status field and it will upload as an attachment and show up in your post.