1. Go to %SystemDrive%\documents and settings\%username%\sendto (or \Windows\SendTo in Win9X).
  2. Right-click in the right hand panel and select New > Shortcut
  3. Create a new shortcut to Notepad.exe in the sendto folder.
Now if you right-click any TXT, VBS, CMD, DAT, NFO etc. file, you can choose the Send To menu and send the file to Notepad which will immediately open it for editing.

http://www.petri.co.il/send_to_notepad_shortcut.htm