We assume that you have already installed Ghostscript or more precisely, the Ghostscript library, in version 8.50 or newer (PS_View should also work with versions > 8.00).
Under Linux, the files listed in the previous subsection (except for psv) should be copied to a dedicated directory, e.g., /usr/local/share/PS_View/. The shell script should be placed in a directory which is in the system search PATH (e.g. /usr/local/bin/) and edited with the path to the gswxluas file. You can also copy localisation files to an appropriate system directory (e.g. /usr/local/share/locale/) but this isn't necessary. By default PS_View uses the system Ghostscript library (/usr/lib/libgs.so.8); you can decide to use a different library by selecting it in the menu Options -> Configuration.
Under MS Windows the files listed in the previous subsection (except for psv.bat) should be copied to a dedidcated directory, e.g., C:\ Program Files\ PS_View\ . The batch file should be placed in a directory which is in the system search PATH (usualy in the same path where other batch files are placed) and edited with the path to the gswxlua.exe file. PS_View will use the Ghostscript library installed in the system (found through the Windows registry); you can decide to use a different library by selecting it in the menu Options -> Configuration.