I suggest u should try to get used to using Dreamweaver, cause it's gonna be (and it has been) a very popular and may be no.1 HTML graphical editor, and it will increase its features to be able to support most of the popular scripting language, as it has been with ASP, and next with PHP (in MX 2004).
Of sourse, its ability to preview the page as how it will be displayed in the browser is the main reason you should use it Meanwhile, you can make spaces in the page for your PHP script that can be typed in its code view. So, i figure out using just notepad for the time being is very unefficient, because there are a bunch of tools out there (Dreamweaver is one of them) that can reduce much of your time.