NotepadCrypt is a simple text editor based on Notepad2 with the added option of encrypting the contents of the files it edits. Except when opening and saving files, refer to Notepad2's documention. Nothing has been changed. If you read or write unencrypted files, nothing has been changed. If you open an encrypted file, NotepadCrypt will prompt you for the passphrase. When you save a new version of the file, it will be automatically encrypted using the same passphrase. There is one new item on the file menu, "Set Encryption PassPhrase" which will let you change or remove the encryption.

Download
http://www.andromeda.com/people/ddyer/notepad/NotepadCrypt2.0.15.zip