Hi MrsLop:
go to this page:
To download the proper readerAnd in step 1 of 2, select (Mac 8.1 - 8.5) or (Mac 8.6 - 9.0), depending on what system platform your using (if memory serves you're using 8.6 and need Acrobat Reader 5.05; OS 8.1 - 8.5 will need Acrobat Reader 4.05) from the Platform drop down menu.
Set the connection speed and language the same way. When you select the connection speed the browser will show you the step 2 of 2 section and all you have to do is click the Download button.
You should get a compressed file with a .bin file extension downloaded to your disk and it should automatically unstuff itself using stuffit's expander. If it doesn't unstuff itself, then do it manually with the expander.
Good luck