Hi Elizabeth, If you can install as the user who will run athena/artemis, that should definitely help. As Bruce suggested, the most likely problem is that Athena/Artemis are trying to write files to a directory they do not have permission to write to (hope the grammar police are not reading this!). Generally, Athena and Artemis will store intermediate data in C:\Documents and Settings\%USER%\Application Data\horae I forget if this is controlled by the environmental variable %APPDATA% or %USERPROFILE% or %HOMEPATH%, but that shouldn't stop us -- just set these to a directory the user can write to just before running Athena/Artemis. For me, this batch file Run_Atermis.bat: @echo off SET IFEFFIT_DIR="C:\Program Files\Ifeffit\" SET IFEFFIT_BIN="C:\Program Files\Ifeffit\bin" SET PATH=%PATH%;%IFEFFIT_BIN% SET PGPLOT_DIR=%IFEFFIT_BIN% SET PGPLOT_DEV=/GW SET USERPROFILE=E:\Newville SET HOMEPATH=E:\Newville SET HOME=E:\Newville %IFEFFIT_BIN%\runner.exe artemis REM End of Run_Artemis.bat works to put the 'horae' files under E:\Newville. I suspect that this could be made more robust, but that should at least get you running. Cheers, --Matt