I'm not seeing an "Image" icon or a smiley icon; could it be because I have it designated as "private"?
I don't think it's because you have made your gallery "Private" or "hidden" a picture; there are extra steps you must take to specifically make a picture or whole gallery private or hidden.
Here are the steps I use to post pictures from SmugMug. Pardon me if they are too basic or if you are already doing them! I decided to post them right here on the DIS because I don't know what programs are on your computer (i.e. Word etc.).
Basically, all you are doing is copying code for your picture from SmugMug and then using the Image function on the DIS.
Here are the steps I use to insert a picture from SmugMug into the DIS:
1 – First find the picture you want to post on the DIS.
2 – Locate the “Share” icon; the first icon below the picture (has a rectangle with an arrow).
3 – Click on the Share icon which will bring up a new window.
4 – Click on “Choose a size”. I usually post my pics in X-Large but choose whatever size you like.
5 – Click on the code displayed i.e. to highlight the entire code.
6 – Use the “control key” plus letter “c” to copy the code
OR just click anywhere on the code line and using the right mouse button select: “Copy”.
7 – Go to the DIS and in your new post window, click on the “Image” icon. It's the one immediately to the right of the Smilies icon.
8 – A new window will appear.
9 – Paste the code you copied into the Image URL line.
10 – Click on Insert and your picture should appear in the post.
Remember that you can always call me for help. I will PM you my cell phone number if you need more help.
Let me know how this works out.