extracted from http://www.linux-sxs.org/internet_browsing/mozilla.html
( it works for me ):
# Installing Adobe Acrobat is fairly simple as well.
* tar -xvzf linux-505.tar.gz
* cd ILINXR.install
This will run the install script which will prompt you for the final location to install Acrobat. After this runs, you should run the following command to create a link in your path to the acroread startup script (the recommended way to run the program directly:
* ln -s <acrohome>/bin/acroread /usr/bin/acroread
Finally, to make it available as a plugin...
* cd /usr/lib/mozilla/plugins
ln -s <acro-home>/Browsers/intellinux/nppdf.so