If you are still using plain-old notepad.exe then I highly suggest you check out Notepad2. It is a much improved version of notepad but without all the bloat and madness of Word. If you’re using Notepad2 already then you might want to check out the extended version. It adds some additional features such as code collapsing and the installer does the Windows work to replace notepad.exe with notepad2.exe.

http://code.kliu.org/misc/notepad2/