Host your pictures on some online site like PhotoBucket.com
Copy the "direct link" to the picture to your clipboard
Click on the little "picture frame" icon above this text box (under the "undo" button)
Paste the URL (direct link) of the picture into the resulting window.
Click "OK"
Voila! Pictures
You can include as many as you want by clicking and pasting again. Make sure you have re-sized the pictures BEFORE uploading them to your hosting site.