There are quite a few ways to do this with javascript or css.

One built-in-to-DW way you can do this with is to use Swap Image Behaviors on your text.

First, make sure your image that you want to swap has an ID in the Properties tab.

Next, highlight your text and give it a link of # in the Properties tab (this makes a null link)

Then click the + in the Behavior tab.

Choose Swap Image

Choose the ID of the image to swap from the list

Browse to the image you want it to change to.

Hit OK.

That "should" do it for you.

That doesn't make much sense (if Adobe removed the ability to fire an Image Swap from text in DW CS6).

Did you have the before image to be swapped inserted into the page first?

Ah, that's why. You NEED to have an image to swap from for an Image Swap as your title reads.

What you're looking for is more of a tooltip. Something that brings up an image next to the cursor when the mouse moves over link on your site.

This may be of use to you...

http://craigsworks.com/projects/qtip/demos/content/images

morphious1964 wrote:
 
 I need something that is simple, easy to use, and does not require coding. Anything like that out there?

That script I pointed you to has 2 of 3, but "does not require coding" not that I've ever seen, no. There may be some kind of DW Extension that allows for that within the DW interface, however I wouldn't know where to point you.

A basic knowledge of the ins and outs of HTML, css and Javascript is really necessary when working with programs like DW, especially when you run into something that's not covered by the base interface of the program. The link I gave you is actually a very easy to install script, but requires some basic knowledge of html structure and how .js files interact with the .html page.

I recommend doing some online tutorials, the basics are available in a lot of places, I like http://www.w3schools.com for the simple stuff. http://www.lynda.com has very nice video tutorials and goes from basics to some advanced ideas as well.