The image(s) must already be posted to a web site (personal site) or some site like pbase etc. There is an "Insert Image" button on the form in which you write your Café post/replies. Click that button and put the image URL into the text field on the pop-up form. That's it.
Hav, Bjorn is correct (as usual ). For more details, see this thread: https://www.nikoncafe.com/vforums/showthread.php?t=53158 Regards,