anyways when installing it says that some reg entries were saved to my home folder they are all there except for KORD
There shouldn't be any reason why it would saved all files, except KORD. Have you activated it ? Because, the .REG files are created only after a successfull activation.
However, it's not a problem, you can create it manually, by using the appropriate option ("Backup RegKey") of the Addon Manager, for the scenery you need to create a backup .REG key. KORD, in this case.
Now why do I need these, can't I just run the installer again and enter my serial #
Of course you can. These files are ONLY an additional help, so you don't have to enter it
manually. They don't do anything strange or unusual, their one and only use, is to save you to enter the Serial Number manually, and that's it.
I plan on upgrading my OS from XP64 to W7 in a month or two, should I save these keys before formatting my HD?
You can lose them, it's not a problem, as long as you have your purchase receipt at hand. And if you also lose your purchase receipt, there's a way to retrieve it yourself from the Esellerate web site, without having to contact us.
It's all explained in the installation guide, named FSDT_INSTALL_GUIDE.PDF, which is found under the FSDreamTeam folder after installing any scenery. Reinstall is discussed starting from Page 9.
And it's also discussed here on the forum, on a Sticky thread in this very section:
http://www.fsdreamteam.com/forum/index.php?topic=649.0