The problem he is having would likely be even worse on a PC. It's a PEBKAC error!
Here is a compressed OS X Disk image file with the manual. If you can't open the pdf's in this then you have some serious software problems and should visit the Apple Store or grab a friend who's a Mac wizard.
http://www.reprehensible.net/~sig11/...70z_manual.dmg
There is never any need on MacOS to have Acrobat Reader. In fact the display in OS X is Display PDF!