If you’re a programmer using Windows, then most of the time you probably have had opened a source-code or other files with uncommon file-extension, to notepad. Shift+Right-Click a file in Windows Explorer and clicking the "Open With…" shortcut is probably the most popular method of doing this.
But there is another method that will allow you to open any file with notepad, and this method is my favorite Windows tweak. This is the "Send To" tweak.
Win9x
1. Open C:\Windows\SendTo Folder.
2. Create a New Shortcut to C:\Windows\Notepad.exe
WinXP/Win2K/Win2003
1. Open C:\Documents and Settings\All Users\SendTo Folder.
2. Create a New Shortcut to Notepad.exe
This method will add a new menu to “Send To”, just right-click any file that you want to open to notepad, and choose "Sent To" -> "Notepad".
Note: Although I describe the method to add a shortcut to Notepad in your Send-To, you can actually apply the same tweak to about any shortcuts, like Shortcut to Write.Exe (Wordpad), shortcut to your Icon Editor, shortcut to your Bitmap editor and so on.
Cheers and Happy Coding!