How is a basic topographic map stored on a ArcGIS server? Is the data vector or raster? Is the data 256x256 .jpg map tiles with a set for each zoom level? What I need to figure out is how to get a topo map from a website setup with: "This application is using ArcGIS API for Flex version 2.3.1. Build date 2011-04-26." I have permission to download the data but the website owner does not know how to provide the data to me. I would like to use the topo map on my hand-held Garmin GPS. I can get 256x256 .jpg files from the site.