The IBM/LINUX version of PREPRO2002 comes with executable codes, in compressed form. 1) To uncompress and install, copy INSTALL.BAT and PREPROZ.Z to your hard drive. Execute INSTALL.BAT - WARNING - DO NOT execute PREPROZ.Z, or the system will not properly install into a directory structure. After installation you can delete PREPROZ.Z and INSTALL.BAT. 2) To VERIFY proper installation, it is recommended that after installation you execute VERIFY. This is a batch file that will run the codes in sequence. The final two codes will display the calculated cross sections (EVALPLOT), and compare the results you calculated to a standard set of results (COMPLOT). Difference of about 1 % are acceptable; larger differences indicate an installation problem. If the codes EVALPLOT and COMPLOT fail to execute then you may need to recompile them and change the path in the Makefile (LINUX.MAK)to the directory that contains your X-Windows routines. i.e. /usr/lib/X11. In this case you will need the FORTRAN source codes that are contained in the UNIX distribution. 3) If you have any problems notify the Nuclear Data Section, IAEA, Vienna, Austria. services@iaeand.iaea.or.at