ghostview.tar contains the ghostscript postscript interpreter and fonts,
and the ghostview GUI for ghostscript.  To install, untar in /usr/local.

Define the following in your environment:

GSLIB=/usr/local/lib/ghostscript
GS_LIB=/usr/local/lib/ghostscript:/usr/local/lib/ghostscript/fonts:/usr/local/lib/ghostscript/examples

ghostview can be run as "ghostview file.ps".  See the manpage.