Home Page

This is a simple task for someone that knows inside and out ImageReady software! In my homepage, I have a big center image (slide #5) that display my? Featured Project of the Month.? On the right side of the center image are small thumbnails of other images of the project (Rollovers). I need to make this thumbnails into rollovers that when the user pass their mouse over the small images thumbnails the big image version of that thumbnail shows in the center image frame on the homepage. I did it one time, but I forgot how to do it. The file is a ImageReady .psd with all the layers ready to go. I don't want to change anything about the set up of the file because I need to update this every month and I will like to be simple for me to do. My goal is to only have to change the images every month and upload back to the server.