I have recently bought photoshop 7.0 and it comes up with a message saying:
Error: "...missing or invalid personalization information"
I have followed the intructions at http://www.adobe.com/support/techdocs/328765.html only to find Photoshop 7 is not in my registery.
Please help.

http://www.adobe.com/support/techdocs/328765.html information here and
http://www.appdeploy.com/messageboards/fb.asp?m=168

Hope that helps