[newbie] Acrobat install error

[James & Michele Brown]

I'm trying to install Acrobat 4.0 from a 7.0 cd.  After Installing 
platform dependent files I get the error "./INSTALL: ed: command
not found"  ERROR installing /usr/local/Acrobat4/bin/acroread.

Anyone have any ideas, couldn't find anything in the archives.

JT