(Turbo Delphi suddenly no longer registered)
There should be some reg<number>.txt in the home directory of your user.
That is a file that was sent to you by Code Gear when you registered Turbo
Delphi.
Did you either clean out your homedir, or change the user you normally work
under? Try to find the registration file either in the original mail, a back
of your system or under the directory of the user you install TD under.