Notepad++ is the editor that I'm using for coding kfmod.
Great for working with several files at the same time, Syntax highlighting, Good Finding options for text in files, can open large files (files with many lines), auto-update, plugins and other things...
So in case you hate MS notepad (sucks to open large files) from windows you can replace it with a better one =D
About the editor:
Notepad++ is a free (as in "free speech" and also as in "free beer") source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GPL License.
Download Link:
http://notepad-plus.sourceforge.net/uk/site.htmPlugin link:
http://sourceforge.net/projects/npp-plugins/Hope you guys enjoy it =)