If the instructions given in Section 22, Page do not work it is probably because you are using an old installation of LATEX which does not include the graphics or graphicx packages.
The instructions are for the version of LATEX and not for the older 2.09 version. You are recommended to update to the newer version which has much better and consistent support for including PostScript graphics within LATEX documents.
(With older versions of LATEX and the psfig macros you may overcome problems by removing the showpage instruction from the PostScript file produced by FIT2D.)