Back up Windows Server 2003 Registry

How to create a full backup of the registry and system state data in Windows 2003
To back up the system state (including the registry hives system, software, security, the Security Accounts Manager (SAM), and the default user (but not HKEY_CURRENT_USER)), follow these steps:

1. Click Start, point to All Programs, point to Accessories, point to System Tools, and then click Backup. The Backup or Restore Wizard starts.
2. Click Advanced Mode.
3. Click the Backup tab.
4. On the Job menu, click New.
5. Click to select the System State check box.
6. Click to select the check boxes next to any other files, folders, or drives that you want to back up.
7. In the Backup destination box, choose "File".
8. In the Backup file name box specify a path and file name for the backup (.bkf) file. Or, click Browse, specify a file name and location where you want to save the file, and then click Save.
9. On the Tools menu, click Options. Specify any additional backup options that you want on the appropriate tabs of the Options page. Click OK.
10. Click Start Backup.
11. If you want to set advanced backup options, such as data verification or hardware compressions, click Advanced. Specify the options that you want, and then click OK.
12. Review the settings on the Backup Job Information page. Specify whether you want this backup to replace the information that is already present on the destination media, or add this backup to the existing information.
13. Click Start Backup.