First, I love how Notepad++ remembers files that are open. We have it at home and we keep a shopping list that is always opened with the app. Great feature. It doesn't work from PC to PC however. Different drive letters, I suppose.
Second, and posting from home as opposed to work grants me the extra privilege of being able to access Photobucket, so I can illustrate what's going on with a screenshot courtesy of Lightscreen. Anyway, I've found that in the margin to the left there's this annoying orange line which highlights each line, but when you save the file it turns green, though as you continue editing, lines that have changed, the line becomes orange again. I get why it does that, but as I'm just writing plain-text files, I don't need the feature, and I can't find any way to disable it. Maybe I'm overlooking something? Anyway, here's the new feature:
http://i159.photobucket.com/albums/t159/JCDentonDX/Forumstuff/sshot8-1.jpg