You didn't provide a URL to your web site, but this is a common effect for Website Wizard users. The Wizard web pages are rather fragile structures. If you add a image that is too big, or a long unbroken text string, you can exceed the capacity of the content area. This then has the effect of pushing some of the other content to the wrong place. This effect is mostly visible with Internet Explorer. Other browsers tend to compensate and keep everything in place.
Try using a smaller image. If you provide us with a URL of your site, we might be able to make a better suggestion.
