There is a good chance that you will want the option to run NWCSAF-GEO on archive data as well as (or instead of) on operational data arriving via a satellite antenna. In this section we will walk you through the steps required to set up an EUMETSAT account that will give you access to a huge amount of archive satellite data. This includes the HRIT data that is used within NWCSAF. We will then show you how to order, download, untar and decompress the HRIT files so that they can be used in the NWFCSAF-GEO software.