If you want to put photos on both the left and the right of a block of text, you can do it with tables, or you can use styles to do it.
To use styles, when you insert the image and the Image Properties window appears, click the "Advanced" tab, then type in the "Stylesheet Classes" box either "floatimgleft" or "floatimgright" This will allow multiple images to appear correctly on either the Firefox or Internet Explorer browsers within the same horizontal space. Note that they will not appear correctly in the editor window. You will need to "Preview" or "Submit" the page to see how it will appear.
To get the stylesheet classes to be used, you will need to change the Input Filter to Full HTML.
You only need to do this if you want to have multiple images in the same horizontal space.