Dreamweaver 3 question

Hey,

I was wondering if you can tell me how to do the following in Dreamweaver. I forgot how, but i know its possible within Dreamweaver. What im trying to do is the following:

I want to be able to swap 2 images. For example when ya go over a button, it changes colors and text appears besides it. Does this make sense? Alot of sites use it. Just curious how you do it in Dreamweaver.

Thanks