I am attempting to install Adobe Photoshop CS4 on Windows 7?

I have a laptop that is running on Windows 7 and I am attempting to install Adobe Photoshop CS4. It downloads the program file alright but when I click on the Set Up button it says "Cannot install Please click quit below" and then below it there are two bullet points that say:

-Adobe Photoshop CS4 11.0.1 - Adobe Photoshop CS4 not installed

-Adobe Photoshop CS4 (64 Bit) 11.0.1 - Adobe Photoshop CS4 (64 Bit) not installed

What exactly is going on? I tried running the set up in a different compatibility mode (e.g. Windows XP and Windows Vista) but no luck.

Am I even clicking the correct file in the folder? Or is my computer just not going to work with Adobe Photoshop CS4?