Thank you for the responses. By setting a field on the page type that the map uses, equal to the image path, (
/Kentico82/myWebsite/media/myWebsite/BluePushPin.png), I was able to get the images to change.
However, my site has multiple page types for maps and many maps. Is there a way I can set up data source for the image as Brenden suggested? I tried to set up a Media Files Data Source webpart, but I don't think it was configured correctly. The only documentation I was able to find on data sources were all for Products Data Source. what would I write for the repeater/datalist transformation? I will keep trying with this, but any resources or suggestions on how to learn this material, or any kentico material in general, are greatly appreciated. This forum has been my greatest resource thus far, but I really would like to master Kentico some day.