An image can be added to any object that supports rich text.  This can be done by clicking on the insert image button [] when editing the object.  When you click on this button you will receive the Insert Image dialog. (Displayed Below)

This dialog allows you to:
1) insert an image that you already added
    This option will enable you to easily insert an image that you have already uploaded and attached to this object.  This listing is per object, so you will only see images that are attached to the object that you are editing in this list.

2) link to an image that is already on the web
    This option allows you to link to an image that you may already have on the web.  You can use this option to insert an image from anywhere on the web.  In addition, this option allows you to embed images from photo sharing websites like Shutterfly and oPhoto without having to upload the images to Organize Us.  To do this just paste the link that you use to share the photos into the image URL field. 

3) upload a new image and insert it
    If you want to upload a new image, you can do that by selecting a new photo here.  [When you do this, the image may initially display as broken in some browsers, but it will display correctly after clicking OK]