forget adobe ....
http://www.foxitsoftware.com/downloads/
unless you specifically need adobe for plugins to read copyright protected documents
foxit does a brilliant job ... loads quickly
acrobat reader = 100000Mb
foxit = 2.1Mb
and doesn't need installing ...
to answer your question you've deleted the original files used to install - maddeningly ... you also need the files to un install
the easiest way is to
if you have the files on cd ... reinstall - then uninstall
if not
downoad version 6 again ..
http://www.uitm.edu.my/ciis/download/acrobat/
install - uninstall