QTR-Quadtone RIP

Hi,
I have downloaded the program twice and can't locate the program. I double click the 
package (it only lets me select the destination as my hard drive), I get the message it has 
been downloaded successfuly and then it is nowhere to be found. 
All of Mr. Harrington's readme's basically assume that you have the application open but 
no information on how to open it. Help!
In Photoshop CS, nothing is showing up under my printer profiles or under the automate 
window.
I used Find and it can't find anything as well.
I have an Epson Pro 4000.

Sincerely,
bill