try this:
When you're logged into MCM forum:
1) from the upper right corner of the page, click the pull down arrow and click, My Gallery
2) Then click "New Album", the buttons on the right
3) follow the directions, then click, "Create Album"
4) Identify this new album that you created
5) click the pull down options on the right titled, "Select an operation"
6) Choose "New Image"
7) click "return to album" in popup
8) Fill in the boxes as described and follow the directions and click, "Choose File". This will allow you to upload images from your computer, click, "Submit Image"
9) You will get to the image page. Click the "Image Link:" option to get the code. Copy this code with key command or with File pull down option on your computer.
10) Go to the thread and reply post by clicking the image icon for, "Insert Image". There you will be propted to paste the image code into the box that appears.
Hope this helped. . .