ATTENTION: Squirrel musicians using Windows VISTA and Windows 7!!!!!
You may experience strange problems when compiling songs. This is because the notepad.exe included with both those OSes, is goofy.
A safe alternative is Notepad++, and is actually, in all honesty, a better choice.
It is what is used in the DOOM Demonstration video. You have alot more editing options, some neat tricks, multiple files at once, etc.....
and best of all, its FREE, and saves your files in the proper plaintext mode !!!
Get it here: http://notepad-plus.sourceforge.net/uk/site.htm