To add more Esri fonts for use with ArcGIS Explorer Desktop build 3400, download the Fonts Expansion Pack. Esri fonts are used when displaying ArcGIS layer files and layer packages.
ArcGIS Explorer Desktop uses a web-based help system. If you are connected to the Internet, you do not need local help files. If you are behind a firewall or disconnected from the Internet, you can download this compressed file containing local help files.