Windows 95, Windows 98 & Windows Me:

NOTE: Do not follow these steps to export a whole registry hive (for example, the HKEY_CURRENT_USER hive). If
you must back up a whole registry hive, back up the whole registry instead.
Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate and then click the key that contains the value that you want to edit.
On the File menu, click Export.
In the Save in box, select a location where you want to save the .reg file, in the File name box, type a file name,
and then click Save.
To Back up the whole registry:
Click Start, then click Run. The Run dialog box appears.
Type regedit and click OK. The Registry Editor opens.
Click the Registry menu and click Export Registry File.
Verify the following items in the Export Registry File dialog box:
Save in: Desktop
File name: Registry Backup
Save as type: Registration Files
Export range: All
Click Save.
Exit the Registry Editor.
Verify that an icon labeled "Registry Backup.reg" is on the desktop. CAUTION:
NOTE: This method for Windows 95/98/Me will not work for Windows NT/2000. Windows NT/2000 has additional security protection that prevents this backup from being restored.