I've tried the Search function to look for Adobe Photoshop and Adobe Photoshop 7.0.1 - nada. It's gone from my computer and I'm pretty sure no one's deleted it. The Photoshop folder is still there with the subfiles (or whatever they're called) and Imageready works as normal, apart from that I can't push the button that takes me to PS. I tried going to Control Panel - Add/Remove programs and apparently it's still there...? Suggestions?
Sounds like someone has deleted the adobe folder in program files...Photoshop will still be in your registry...Try cleaning it Arbiter
I had this problem once, I removed the program, then reinstalled, yet I needed the serial number again, so I'd find that if you tried my method.