http://blogs.esri.com/Info/blogs/gisedcom/archive/2009/05/26/layer-packages-arcmap-arcgis-online-and-arcgis-explorer-900.aspxA key new capacity in ArcGIS Desktop 9.3.1 is the ability to generate "layer packages." These are sets of data plus the classification and symbolization scheme, exported out from ArcMap, and able to be drawn as the creator saved them. Instead of a folderenCommunityServer 2.1 SP2 (Debug Build: 61120.2)