Photoshop Elements 6 Uninstall & Reinstall

In 2007 I bought Adobe Photoshop Elements 6.  Earlier this year a pop-up message told me one of my files was missing and that I should reinstall the program.  When I opened my "Add or Remove programs" tool, there was no listing for Photoshop elements 6.  I even searched for a "uninstall.exe" file and found nothing.  I recently had a computer repair technician try to fix a number of problems but after correcting several, my shortcut to Photoshop Elements was missing and even though this program's files were seemingly all in place, I could not open the program.  Now after deleting as many of the 'PS Elements 6' program files as the system would allow, my computer won't respond to the program CD in order to reinstall Photoshop Elements 6 which came, new, from Amazon.com.