Remove Add/Remove Programs Entries From RegEdit

The following Twick i find out on the Internet and am putting here for your reference.

What do we do when we want to Uninstall any program from the computer system in a safe manner we use Add/Remove program to delete that isn't it..

But here i will provide you the smart way to that. Normally this may be due to poorly designed uninstaller with this program. That is why some programs may not be removed properly and a reference to this program remains in the computer registry. This reference in registry may be creating problems to run your computer smoothly. Here you need to delete this reference to edit your computer registry using RegEdit editor.

• First go to Start button and open Run dialog box. Type here RegEdit and press Enter.
  
• Now in editor Navigate to the given path
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall.
  
• Here locate the entry created by your program with its name and select that entry from the list on the left panel and delete its key.
  
• Close the Registry Editor and restart your computer, the program will be removed from your computer permanently.

I have found some difficulties in removing file from the Add/remove programs, some times it does not show the file size in the Add/remove programs and that also i can't delete, what to do?

Please help.