Add "Open with Notepad" to the Context Menu for All Files

Whenever u try to open a file of unknown extension, a pop up comes which makes u scroll down the list of applications and select one(which most of the times is notepad)So y not have the option jst on 1 single right click.Follow the steps n u'll have 1!!!

Manual Registry Hack

Open regedit.exe through the start menu search or run box, and then browse down to the following key:

HKEY_CLASSES_ROOT\*\shell

Right-click on "shell" and choose to create a new key, calling it "Open with Notepad". Create a new key below that one called "command". Double-click on the (Default) value in the right-hand pane and enter in the following:

notepad.exe %1

Now right-click on any file and you'll see the new entry.