If you are trying to get the text in the images to word wrap I don't think that is possible without opening the images in a program and adjusting it in that program. But if you are just trying to make the images completely viewable you can adjust the actual size of the images to fit the given area. Did you use a template for that site? Programs such as dreamweaver allow you to click on the image and size it by clicking on the side box and just adjusting the size of the image manually. If not you can size it by defining the size of the image in html. You do this by just typing in this code after the image has been defined: width="insert size here". So it would look like this <img src="whatever the location of your image is.gif" width="428" />
You can also adjust the height of the images in this same way, just replace the word with with height and use the same format. So it would look like this: <img src="whatever the location of your image is.gif" width="428" height="200" />
You can just mess around with the actual width and height numbers to get the image to the exact height and width that you want to optimize the space available in your site and also the look of the image, since if you make it really tall and not so wide the image will look a little distorted.