Want to add an image to the top, center of my index page. I am using, insert image. When I do align="right", the image is right justified. When I do align="middle" it stays left justified. There is no other text on this line.

Here's one way.
In the css use
img.center {
display: block;
margin-left: auto;
margin-right: auto }

HTML
<img class="center" src="images/mycoolimage.jpg" alt="This is my image" />

A non-CSS way:

<div align="center><img src blah blah></div>