Since this came up on another thread thought I'd put this here: 

Here is a quick "how to" on posting pictures:

• Open two browser windows or tabs. One where your images are, one on the forum. That way you can easily go back and forth if you are doing multiple pictures.
• Go to your photo and copy the URL to it. It should end in ".jpg"
• In your other browser, go to the forum and start your post. When you get tp the place you want your picture to show up, click the image icon.
• You now see a pop-up window with lots of options. Don't panic.
• In the box labeled URL paste the location of your photo.
• In the width box, enter 640. This will resize your picture to fit the forums nicely. Otherwise readers have to scroll left/right and up/down to see the picture if the original is very large.
• Leave everything else blank and click OK.
• Most important: you cannot upload photos directly to the forum. They must be on the web already. Either on your blog, Photobucket, Flickr, etc.

The rest of the options there are advanced and really not necessary for basic image publication here. It's quite easy once you get used to it.

Cheers.