Answer
Good answer! I was able to fix it by using the tool by norton.
If you have Windows XP Professional and access to an administrative user account, you could change the registry editor options in the Group Policy Editor.
1. Click Start, Run
2. Type GPEDIT.MSC and Press Enter
3. Go to the following location
* User Configuration
* Administrative Templates
* System
4. In the Settings Window, find the option for "Prevent Access to Registry Editing Tools" and double-click on it to change.
5. Select Disabled or Not Configured and choose OK
6. Close the Group Policy Editor and restart your computer
7. Try opening REGEDIT again
Answer
Why did your administrator disable Registry Editing in the first place? Was there a reason he did this? Or was it merely an oversight? If there is a reason he did it, it would be irresponsible for anyone to tell you how to re-enable the feature. However, if it was just an oversight - like he disabled it then forget to enable it again - just ask your admin to fix it.
Answer
I found a way to get into the registry editor if its been disabled, heres how you do it:
1. Disable as much as you can from your startup. Remove programs from your startup folder and such, so as not to lag down the bootup process.
2.Create a new shortcut on your desktop, point it to "C:\Windows\regedit.exe"
3.Log off, then log back on
4.As soon as you see your desktop, double click on the shortcut. The system does not check for policies until a few seconds after it booted up. If you click on the icon fast enough, it should let you get in.
After that, do all you need. After you close it though, it will not open unless you redo step 3 and 4.
Answer
I found one vbs script to enable the registry editing. and below is the link.
www.dougknox.com/security/scripts_desc/regtools.htm
HaXxOr Simple
The way to get into registry editing is simple. Open your start menu click Run and paste in the folowing command: REG add
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f
(note that if there's a space in the words from HKCU to \System in the bolded line, it must be left out)