Having Pshop CS (version 8) on a MAC OS X 10.5.8

I downloaded the trial version of FF for Mac. I want to put te plugin's in my pshop. But I have no idea how to do this proper. I try to click on the install and then I get:
Folder permissions changed successfuly.
Searching for Adobe Photoshop CS2...
Adobe Photoshop CS2 is not found.

Searching for Adobe Photoshop CS3...
Adobe Photoshop CS3 is not found.

Searching for Adobe Photoshop CS4...
Adobe Photoshop CS4 is not found.

But I can't find them in pshop. And when I drop the plugin's in the plug in folder I can;t find them either in pshop.

Hope I can get some help here

Quote
It only works as a plugin for CS2 and above.

Should that be for CS1 and earlier?

love-hate my mac...

SteveO