It is possible to change the “registered to” information in Windows XP/Vista. This may be required if you typed in something nasty in these fields and then want to change it later. On my machine, registration information looks like the following. You can see this information by pressing Windows key along with break key (Win+break).

To change these values, you need to modify entries in Windows registry. Please be careful while making these changes as any mistake could render your machine unusable!

1. Open registry by typing “regedit” on command prompt.

2. Open folder “My Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current Version”. You will see the following entries on the right side.

3. Double click on the entry to change and type in new values.

4. Close “regedit”. You should see the new values when you take the system properties again (Win+break).