I shared this with another member, didn't want the info to go to waste, so I'm posting it in the public area as well.
Some of you may notice posts where people are inserting images inside the text in a nice, clean format. This is actually really easy to do ...
Note that the info below assumes you are working on a PC (not Mac), and that you understand the difference between a regular mouse click (left-click/left mouse button) and a right-click (using right mouse button).
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If you already have the pictures you want to insert stored online (like at Picasa or Photobucket), skip steps #3, #4, #5
If you don't have your pictures posted somewhere else on the web, start at step #1.
1) Start a new topic OR reply to a post in 'Go Advanced' mode OR edit your existing post in 'Go Avanced' mode.
2) Click on the "Manage Attachments" link and upload the pictures you want in embed in your post.

3) Look back at your post, look just under the box you type your message into, you should see several hyperlinks to your pictures with checkboxes next to them.

4) Right-click one of those underlined picture links and a little menu should appear - choose "copy shortcut" (Note: some browsers may have "copy link location"). This will copy the URL for the image into your computer's virtual clipboard.

5) Put your cursor in the exact spot inside your post that you want to insert your image, then click this icon under the 'font size' box:

6) After you click that image, a popup will appear asking for a URL. You should already have the link to the image you're wanting to insert copied from elsewhere, so without clicking anything, press CTRL + V to paste the URL (from your clipboard) into the entry area and click OK.

7) An image should appear in your post after you click OK. If not, you probably did something wrong, or I screwed up at trying to explain this. If it worked, simply repeat the process starting at step #3 for each additional image.
Keep in mind, it is critical to pay attention to where inside the post your cursor is AND to remember to press <ENTER> after posting a picture to force the next picture onto the next line!
This process may sound difficult - I don't can't know everyone's level of experience with a computer, so I'm trying to find a good balance between "I'm stupid on a computer" to "I invented the computer, bro!"
All the steps are there, and there are actually a few ways to skin this cat, but above is a basic way that requires no knowledge of how BBCODE works.
There are more advanced ways to do this, but most people like to keep it simple.