How to retrieve the username used to register Delphi
If you need to retrieve the username that you used when registering Delphi with Borland (which you have to do in order to get an authorization key), but have forgotten it, you will be pleased to know that the username together with your e-mail address and other information is stored locally on your PC.
This information is only available if you have registered/activated your copy of Delphi and have not reformatted your disk or deleted your user profile.
Navigate to the file:
C:\Documents and Settings\<your-account>\.borland\registry.dat
Substitute your username for "<your-account>" in the above.
Open it using notepad and you should see the username, address, serial number, authorization key and other bits of information used when Delphi was registered.
Alternately you could try contacting Borland support and asking them - but I have yet to hear from anyone who has been successful via this route.
These notes are believed to be correct for Delphi 7 on Windows 2000 and may apply to other versions as well.
About the author: Brian Cryer is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.