What you need to do is cut and paste the contents of the screen into a text file. When you save it, you will get the html as well as the code. However, cutting and pasting in X is slightly different than in Windows (and therefore somewhat confusing to most).
First, simply highlight the text that you want to copy in netscape.
Next, open up an editor in X (you can also paste to vi or another editor in an x-terminal, but lets just stick to X apps).
Finally, hit the middle button (if you don't have a three button mouse, you will have to have the Emulate3Buttons option on and click both buttons and the same time). You need to do this while focused in the document area of the editing app.
This should paste the text that you selected in netscape into the editor. I hope that helps!
Chris King