Provided by Dennis Passmore in the Delphi Newsgroups: If a person would just backup there (sic) "C:\Documents and Settings\{userid}\.borland" folder after they have register Delphi 2005 and before a uninstall then all they have to do is restore it after a re-install it and then there is never a reason to re-register as long as the user never changes there "user name" on the PC since the registration information is directly linked to the login user name. NOTE: This only works on a system with the same hardware because this activation information is specific to hardware.