Regedit, which is built-in in Windows 2000, XP and Vista, enables you to view, find, and modify settings in your system registry. A registry contains information about how your computer runs. Regedit can be very risky so make sure to back up, export everything before you change anything.
1. Click Start, and then click Run.
2. Type Regedit, and then click OK.
3. Press F3, then type the name in the box and click Find Next.
4. Then right-click, select delete.