Well- I could understand it, except do you know how much Adobe Photoshop costs? Anybody who buys it generally guards their Install CDs like a hawk- and yet-
hi...thanks for that...it was just a long shot as i've lost the disc...
Regardless, Adobe photoshop installs a LOT of hooks into the shell and windows itself for such things as thumbnails, the only program that knows what entries were created by the installer for sure is the installer itself.
Also, as CR said, it's quite easy to download the trial and re-enter the appropriate registration information for their legal copy of Adobe photoshop, and they're back in business.