INSTALLATION AND SETUP OF THE DOS VERSION Download the self-extracting file PITZ111.EXE to the hard drive of the personal computer where PHRQPITZ is to be set up and executed. To retain pre-designed sub-directories during extraction, execute the self extracting file in a directory named PHRQPITZ: PITZ111 -D During extraction, a READ.ME file, the executable files (PHRQPITZ.EXE and PITZINPT.EXE) and database files (PITZINPT.DAT, PHRQPITZ.DAT, and PITZER.DAT) will be written into the PHRQPITZ directory. A test file is extracted to TEST\PITZTEST, source files and a makefile are extracted to the directory SRC, and a description of the program is extracted to DOC\WAISINFO. PITZINPT may be executed with the command "pitzinpt". PHRQPITZ may be executed with the command "phrqpitz" and the program will query for each of the needed files. The test cases can be run by copying the file TEST\PITZTEST to the upper directory and executing the program PHRQPITZ. The results of the simulation then will be found in the file PITZTEST.OUT. To execute PITZINPT in another directory, copy the files PITZINPT.EXE, PITZINPT.DAT, and PHRQPITZ.DAT to the directory. To execute PHRQPITZ in another directory, copy the files PHRQPITZ.EXE, PHRQPITZ.DAT, and PITZER.DAT to the directory where the input file resides.