Cedric,
I've already replied to you by email 3 times, always stating the same thing: as clearly explained in the manual, a backup .REG file was automatically created when you bought the product. And you got a warning alerting you to store that in a safe place for future reinstallations.
All right, you ignored that warning, and you erased FS9 losing that file, but that's still fine. We have a backup for this, and is to use the Esellerate servers to retrieve you registry key. This is called "Server-assisted Reinstall".
The procedure, as I've told you via email, is clearly explained (with screenshots) on page 9 of the fsdt_install_guide.pdf, found under Zurich\fsdreamteam folder, after installation of the scenery.