regedit. How to save and restore register in Vista 64 bits ?

Hi all,
I have to reinstall properly Sony Creative software. So Sony tell me that I must use regedit to delete some keys. But support warns me that I must save register before deleting. And if i make errors, i can restore it.
How to do these operations ?
Thanks.

Welcome
There are two easy ways to restore the registry, one is by using system restore. You can read about restore and the other method by reading this great tutorial.
Registry - Backup and Restore - Windows 7 Help Forums